Guide to Keeping Electric Blue Crayfish: Care, Breeding, and Tank Size

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If you’ve ever encountered a stunning blue creature darting around the bottom of your freshwater aquarium, then you have likely spotted an Electric Blue Crayfish. These eye-catching creatures make for great additions to any tank, and taking care of them requires knowledge and vigilance, which is exactly why this guide exists!

Here we will go over everything related to Electric Blue Crayfish care, from their origin and physical appearance right up through setting up the proper environment as well as their feeding habits in order to ensure that they live comfortably and are stimulated. By getting familiar with these points, you’ll be able to create perfect conditions for your crayfish so it can thrive.

Key Takeaways

  • Electric Blue Crayfish are native to Florida and require the right tank setup with a 30 gallon capacity, hiding places, and a powerful filtration system.
  • Feed them once daily in small portions of dry or live food for optimal health & happiness.
  • Be mindful when choosing compatible tank mates – fast swimmers like danios & snails can coexist peacefully, but be sure to research their compatibility first!

Species Overview

Scientific NameProcambarus alleni
Common NamesElectric Blue Crayfish, Blue Crayfish, Florida Crayfish, Sapphire Crayfish Family: Cambaridae, Freshwater Lobster,
OriginFlorida, United States (Florida Keys & St. Johns River)
Care DifficultyEasy
Life Expectancy5-7 years
TemperamentSemi-Aggressive – will attack and eat smaller fish
Tank LevelBottom Dweller
Minimum Tank Size55 gallons (208 liters)
Temperature Range65-75°F (18-24°C)
Water Hardness3-10 dKH (degrees of Carbonate Hardness)
pH Range6.5 – 7.5
Filtration/Water FlowModerate
Water TypeFreshwater
BreedingEgg layer
Difficulty to BreedModerate
CompatibilitySemi-Aggressive tanks with medium to large fish
OK, for Planted Tanks?Generally no – will dig out or eat plants


Originating from Florida, the Electric Blue Crayfish (also called Sapphire Crayfish) are an extraordinary freshwater species that has attracted people with their striking black eyes and marvelous brilliant blue shade. With a tough exoskeleton to protect them as well as antennae, swimmerets and spiky horns adorning them, these crayfish can reach 4-6 inches in size with the capability of surviving 5-6 years on average.

Although they look intimidating at first glance. When given proper care according to guidelines, it’s not difficult looking after this type of crap. To learn more about where these creatures come from naturally, we should start by examining its natural habitat closely before going any further. Into caring for your own electric blue sapphire pet!

Origin And Natural Habitat

This crayfish species native to Florida, United States, is also known as Procambarus alleni. They live in wetlands, floodplains and other freshwater areas. Its characteristic brilliant blue color allows it to stand out from other kinds of crayfish in its natural habitat, which often presents a salinity level up to 18 parts per thousand. In contrast to younger specimens, adult crayfish molt much less frequently – that’s when they remove their hard outer shell absorbing calcium internally instead.

When creating your own tank for the peculiar breed of crustaceans at home, make sure you replicate conditions close enough so that they can feel comfortable like back in nature. Pick good substrate material, and provide suitable hiding places while keeping track of water conditions, too… these last two being key elements ensuring success.

If everything has been implemented carefully, then you will have created just what was needed for them. The ideal environment allows those same mesmerizing creatures we first found during our discovery journey through Florida waterways to swim freely again!

Appearance And Size

The Electric Blue Crayfish is a truly remarkable creature that stands out in any aquarium, especially if there is more than one! Noted for their bright blue coloring and their exoskeleton, which gives them great protection, they also have distinctive horns, antennae as well as swimmers. Adults of the species can be quite big – reaching up to 4-6 inches in length at maturity.

Blue Crayfish

An important part of the crayfish life cycle involves molting. Newborns molt every couple of days, while those slightly older do so once 1-3 weeks apart. Adults take longer periods between molting intervals (4-8 weeks), with this process allowing them to shed off an old protective shell before growing into a larger-sized version of themselves.


The life expectancy of Electric Blue Crayfish can range from 5-6 years, depending on certain factors such as water quality and diet. As these freshwater crayfish age, their molting rate slows down, which is something to keep in mind when providing them with suitable care for a healthy lifespan. By paying close attention to the living conditions that your electric blue crayfish require, you could help ensure they lead long lives!

Electric Blue Crayfish Care Guide

Taking proper care of an Electric Blue Crayfish is essential to having a healthy and comfortable habitat. This involves providing the right tank size, substrate material, and decorations, and ensuring optimal water parameters.

In order to look after your blue crayfish properly, it’s important to understand these aspects of electric blue crayfish care, from getting the correct aquarium set up, such as tank requirements and decor items, to making sure that all necessary water parameters are met for its well being.

Tank Requirements

Electric Blue Crayfish require at least a 30-gallon tank for sufficient space to explore and hide. While that is the minimum, the recommended would be a 4 foot 55 gallon tank. Tanks that are long and shallow are best for them as they prefer to hang around the bottom of the tank.

Hiding places, such as rocks, PVC pipes or plants (real or artificial), must be present in order to keep these crafty escape artists from reaching the top of the aquarium lid or other fish. If you want to use PVC pipe, black PVC is best as it replicates dark caves.

It’s essential that powerful filtration is employed with this crayfish due to their waste production and natural environment. In nature, they live in rivers that are fast flowing. As such, maintaining water quality and oxygen levels is big for them.

Substrate And Decor

Electric Blue Crayfish need hiding places, particularly if they are sharing their tank with others of the same species. Sand or gravel makes a great substrate as it allows them to burrow and explore. Using artificial caves, rocks, overturned pots, and PVC pipes will give your crayfish somewhere comfortable where they can hide away in privacy. These animals are nocturnal and need dark places to hide during the day.

It is also important to consider what type of environment these creatures inhabit naturally when selecting decorations for the aquarium. Try to include natural features such as driftwood and rocks! Do bear in mind that live plants may be eaten by Electric Blues, so take care when considering this option.

Water Parameters

In order to replicate the electric blue crayfish’s Florida habitat, which contains a warm neutral pH level in its waters, it is key to ensure proper water parameters. The temperature should remain between 68-75°F and the desired pH reading would be 7.0. To keep your tank environment healthy for these creatures as well as maintain good water quality, you must also execute an appropriate nitrogen cycle. This will reduce any potential risk of ammonia poisoning, too (don’t forget about nitrites too)! Thus with keeping a close eye on all these requirements being met, providing a safe comfortable home is achieved for your blue crayfish! Water test kits are your friend. Make sure you make consistent water changes to keep parameters in check.


Taking care of Electric Blue Crayfish involves providing them with an adequate diet. Since they are omnivores, these crayfish can eat a vast range of fish food.

In this part, we will learn about the optimal food for your electric blue crustacean and how to plan suitable feeding times in order to ensure their health and safety. Here are some food suggestions:

  • Algae wafers
  • Sinking pellets
  • Frozen food (like bloodworms)
  • Silver Sides

Feeding Schedule

Keep in mind that the Crayfish is a scavenger by nature and prefer to eat decaying matter. They are also nocturnal and have been known to starve to death if you only feed them during the day. To prevent this, leave a few wafers on the bottom of the tank at night so they can eat.

Calcium should be supplemented in their take so their exoskeleton is properly supported during molting. You can use cuttlebone, but this is known for being an eyesore. A more reasonable approach is to supplement using a calcium supplement or an aquarium Iodine supplement.

For best results, feed your crayfish once per day. Knowing they are most active at night, try to feed them when the lights are off. Remove any uneaten food left overnight.

Understanding Their Behavior

Electric Blue Crayfish can be both captivating and demanding to maintain in an aquarium. In order to properly manage these creatures, it is important that we understand their aggressive instincts along with how best to handle them in a home tank environment. With proper attention and upkeep, they make great additions for any aquarist! It’s vital then that one has knowledge of their natural tendencies prior to taking on this species of crayfish as a pet.

Aggression And Territoriality

Electric Blue Crayfish have a reputation for their territorial and combative nature, which is often on display as they swim across the bottom of the tank or climb decorations to get closer to fish. It’s important that proper setup consideration goes into creating an aquatic environment in order for them and any other inhabitants living with it (i.e., its tank mates) to co-exist without conflict arising between species such as these Electric Blues versus other types of fish.

Providing enough space within your tank gives each individual crayfish room to establish its own territory. This reduces chances of interspecies scuffles from occurring due largely in part to lessening competition among food sources too—for example, when making sure all parties involved are regularly fed, both helping quell potential animosity amongst aquatics while promoting harmonious vibes throughout!


When it comes to breeding Electric Blue Crayfish, aquarium owners can find this an incredibly rewarding experience. Before getting started, the first step is correctly identifying and sexing your crayfish. Males of the electric blue species have specialized claws referred to as gonopods which are used for mating purposes.

It’s then necessary to create a suitable environment in order for successful reproduction. Looking after both parents and offspring require care throughout this process too! With all that being said, cultivating these beautiful creatures could be something truly amazing when done right; making sure you pay attention every step along the way ensures success with Electric Blue Crayfish breeding!


Identifying the sex of your Electric Blue Crayfish is essential before breeding can take place. Males are known to have triangular-shaped tail and large claws in front, while females boast an ovary on their last two legs with more rounded tails. By being able to determine gender, will enable you to pair compatible crayfish for successful mating, and the appropriate setting must also be created for it as well. Knowing all these facts about blue crayfish reproduction provides guidance when moving forward with attempting egg laying or hatching them out afterward.

Creating A Breeding Environment

In order to make sure your crayfish breeding pair can successfully reproduce, it is important to provide a comfortable habitat. This includes having an adequately sized tank that matches the water parameters and temperature of their natural environment as well as adding hiding spots for both male and female crayfish. Providing food in ample supply should also be taken into consideration so they are at peak health during mating season. We have this informative video by Christopher Scott above that goes into more detail.

By creating these proper conditions, you increase your chances of success when reproducing, which leads to healthier offspring overall.

Caring For Offspring

When the eggs have been fertilized and the female carries them in her tail, it is important to maintain a careful watch over the breeding tank and provide proper care for those babies. As soon as the eggs hatch, be sure to separate mom from the baby crayfish, or else she will eat them! Nourish your Electric Blue Crayfish youngsters with nutritious food such as Spirulina, baby brine shrimp pellets that are essential in aiding the growth & development.

To ensure optimal living conditions for small crayfish, you must supply abundant space together with safe spots which act both like shelters when feeling threatened but also prevent cannibalism while providing an adequate quantity of nutrient-dense meal options, including spirulina wafers alongside other feeds specifically formulated made suitable for young freshwater crustaceans.

Choosing Tank Mates

When selecting the best freshwater tank inhabitants for your Electric Blue Crayfish, it is essential to pick appropriate ones as these creatures can be territorial and aggressive. To help ensure a successful environment in which they thrive, we will explore some compatible tankmates along with those that you should avoid when trying to keep harmony within your aquarium. Keeping all of this information into account while maintaining an ideal condition for long-term health are both paramount aspects when caring for electric blue crayfish.

Suitable Tank Mates

How Does A Wakin Goldfish Look Like

Electric Blue Crayfish can live in an aquarium with fast-moving fish such as:

These are less likely to get preyed upon by the crayfish’s territorial nature. Other species of invertebrates such as snails or even other types of crayfish may be considered tankmates too, but it is crucial to assess their compatibility first before introducing them into the same environment as your Electric Blue Crayfish. Be sure you have enough space for hiding places when housing multiple creatures together!

Incompatible Tank Mates

Electric Blue Crayfish should be kept away from slower or bottom-dwelling fish, as they can easily become a target for aggressive crayfish. Shrimp and slow moving small fish may also experience difficulty sharing an aquarium with them. Here are more specific examples:

  • Cichlids – they will harass and even eat the crayfish or large or the opposite if small
  • Fancy goldfish – they will get eaten or killed

In order to create harmony between your aquatic pets, it is important to avoid choosing tank mates which might endanger the Electric Blue by attacking it aggressively. Doing this will help ensure that there is no conflict among all of them inside their living space.

Frequently Asked Questions

How rare is the electric blue crayfish?

They are pretty rare. If you’re lucky enough to spot an electric blue crayfish, seize the opportunity! This one-of-a-kind crustacean has a rare chance of showing up – about 1 in every 10,000 birth will end up with this coloration. Make sure not to miss out on seeing such a fascinating creature – it’s definitely worth the watch!

What fish can live with electric blue crayfish?

When it comes to finding compatible tankmates for Electric Blue Crayfish, the advice is that Danios, Rosy Barbs, and Guppies make great options due to their fast swimming. Slim bodied goldfish work great too. Special attention should be taken when introducing dwarf shrimp as they may become a meal if they are too small or sluggish in movement.

How big does an electric blue crayfish get?

Electric Blue Crayfish can reach up to 4-6 inches when fully matured, giving them the appearance of mini lobsters. These crayfish have an interesting molting process that they go through during their younger years. This is how these creatures increase in size as they grow older. The electric blue coloration of these species makes them a remarkable site for aquatic hobbyists and enthusiasts alike!

Are electric blue crayfish edible?

Tempted by the electric blue of these freshwater crustaceans? Don’t hesitate to give them a try – they are related to shrimp and lobster, making them an excellent seafood dish! Blue crayfish can be enjoyed as part of your diet.

The unique color may come as a surprise, but don’t let it put you off from tasting what could prove a delicious culinary experience. These edible creatures will make for quite the addition to any meal!

What is an electric blue lobster?

The Everglades crayfish, commonly known as the electric blue lobster or by any of its nicknames – Florida crayfish, blue crayfish and sapphire crayfish – is a stunningly vivid creature that can mostly be found in the state of Florida.

Closing Thoughts

Owning an Electric Blue Crayfish can be a wonderfully rewarding experience, but it is important to ensure that its environment and needs are met correctly. This guide has discussed tank setup, feeding habits, breeding opportunities, and selecting suitable tank mates so that owners have all the essential knowledge needed to create a healthy home for their blue crayfish. By understanding these brilliant creatures better, one will surely benefit from many years of fascinating observations in their aquariums with this electric species!

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