Long-finned African Tetra Care Guide: Tank Setup, Diet, Tank Mates, and More

Table of Contents

• Key Takeaways
• Species Overview
• Classification
• Origin & Natural Habitat
• Appearance & Identification
• Average Size & Lifespan
• Care Guide
• Tank Mates
• Food & Diet
• Breeding & Reproduction
• Common Health Issues
• Common Mistakes to Avoid
• Where to Buy
• Frequently Asked Questions
• Closing Thoughts
• Recommended Video
• References

The long-finned African tetra is one of the most impressive African characins available in the hobby. Males develop dramatically elongated dorsal fins that trail behind them like banners, creating a visual impact that’s hard to ignore in a community tank. It’s a larger, more robust tetra that brings a different energy to an aquarium compared to the small, tight-schooling South American species most of us are used to.

Found across West Africa from Sierra Leone to Nigeria, this species has been in the hobby for decades but remains less common than it deserves. It’s hardy, easy to feed, and breeds readily in captivity. If you have the tank space, the long-finned African tetra is one of those fish that makes visitors stop and ask “what is that?” Here’s everything you need to know.

Key Takeaways

• Males develop spectacular elongated dorsal fins that make this species a showstopper
• Larger tetra species (up to 5 inches) that needs at least a 40-gallon tank
• Hardy and adaptable to a range of water conditions
• Active schooling fish that does best in groups of 6 or more
• Easy to breed compared to many other tetra species

Species Overview

Field	Details
Scientific Name	Brycinus longipinnis
Common Names	Long-finned African Tetra, Longfin Tetra, Long-finned Characin
Family	Alestidae
Origin	West Africa (Sierra Leone to Nigeria)
Care Level	Easy
Temperament	Peaceful, active
Diet	Omnivore
Tank Level	Mid to Top
Maximum Size	5 inches (13 cm)
Minimum Tank Size	40 gallons (150 liters)
Temperature	72-79°F (22-26°C)
pH	6.0-7.5
Hardness	4-18 dGH
Lifespan	5-8 years in captivity
Breeding	Egg scatterer
Breeding Difficulty	Easy
Compatibility	Community (with similarly sized fish)
OK for Planted Tanks?	Yes (may uproot delicate plants)

Classification

Taxonomic Level	Classification
Order	Characiformes
Family	Alestidae
Genus	Brycinus
Species	B. longipinnis (Günther, 1864)

This species was originally described by Albert Günther in 1864. It has been placed in several genera over the years, including Alestes and Brycinus, and you may still see it listed under either name in older references. The current accepted placement is Brycinus longipinnis.

Note on family placement: The long-finned African tetra belongs to Alestidae, the African tetra family. This family is entirely separate from Characidae and was not affected by the 2024 Melo et al. phylogenomic revision.

Origin & Natural Habitat

The long-finned African tetra has a broad range across West Africa, from Sierra Leone and Guinea in the west through Liberia, Ivory Coast, Ghana, Togo, and Benin to Nigeria in the east. It’s found in the Niger River basin and numerous smaller coastal drainages throughout this range.

In the wild, these fish inhabit rivers, streams, and flooded forest zones with varying water conditions. They’re adaptable to both clear and slightly turbid water and can be found in a range of habitats from fast-flowing streams to quiet pools. This broad habitat tolerance is reflected in their adaptability in aquarium conditions.

They’re typically found in groups in mid-water, feeding on insects, small invertebrates, and plant matter that falls into the water. Their natural diet reflects their opportunistic omnivore nature.

Appearance & Identification

The long-finned African tetra is a moderately large, streamlined fish with a silvery body that picks up golden and greenish iridescent highlights depending on the lighting. The scales are well defined and reflective, giving the fish a polished, metallic appearance.

The defining feature is the dramatically elongated dorsal fin in mature males. This fin extends well beyond the body, creating an impressive trailing banner that flows behind the fish as it swims. The dorsal fin filaments can reach remarkable lengths in well-kept specimens. The effect is striking and gives this species a distinctly different look from any South American tetra.

Sexual dimorphism is very pronounced. Males are more colorful with the elongated dorsal fin and often show more vivid iridescence. Females are slightly larger and fuller-bodied but lack the extended dorsal fin, having a normally proportioned fin instead. Juveniles of both sexes look similar until they begin to mature.

Average Size & Lifespan

This is a substantial tetra species, reaching up to 5 inches (13 cm) in total length. Most individuals in aquariums reach 3.5 to 4.5 inches. Their size, combined with the flowing dorsal fin of males, gives them a commanding presence in the tank.

With good care, expect a lifespan of 5 to 8 years. Their hardiness and adaptability mean they’re relatively easy to keep healthy over the long term.

Care Guide

Tank Size

A 40-gallon tank is the minimum for a small group of long-finned African tetras. For a proper school of 8 or more with other community fish, a 55-gallon or larger is recommended. These are active, mid-sized fish that need swimming room, and the elongated dorsal fins of males need space to display without being damaged.

Water Parameters

Parameter	Ideal Range
Temperature	72-79°F (22-26°C)
pH	6.0-7.5
General Hardness	4-18 dGH
KH	3-10 dKH
Ammonia / Nitrite	0 ppm
Nitrate	Below 25 ppm

Long-finned African tetras are quite adaptable when it comes to water chemistry. They do well in slightly acidic to neutral water and can handle moderate hardness without issue. This makes them easier to keep than many specialty tetras that demand very specific conditions.

Note the slightly cooler temperature preference compared to many tropical fish. They do well in the low to mid 70s and don’t need water as warm as many South American tetras. Regular water changes of 25 to 30 percent weekly keep the water fresh and parameters stable.

Tank Setup

An open layout with plenty of swimming space works best for these active fish. Plant the sides and back of the tank, leaving the center open for the school to move freely. Robust plants like Java fern, Anubias, and Vallisneria are good choices, as these fish can be a bit rough on delicate plantings.

Moderate current from the filter is appreciated, as these fish come from riverine environments. A sandy or fine gravel substrate works well. Driftwood and smooth rocks provide visual interest and some territorial boundaries.

A tight-fitting lid is essential. Long-finned African tetras are capable jumpers and will find any gap in the tank cover.

Tank Mates

Long-finned African tetras are peaceful community fish that work well with similarly sized, active species. Their size means they should be kept with fish large enough not to be intimidated or outcompeted at feeding time.

Good Tank Mates

• Congo tetras and other African tetras
• Larger South American tetras (black skirt, Buenos Aires, bloodfin)
• Rainbowfish
• Corydoras catfish
• Bristlenose and rubber lip plecos
• Peaceful cichlids (kribensis, rams)
• Gouramis (pearl, blue, moonlight)
• Medium-sized barbs (cherry, gold, rosy)

Tank Mates to Avoid

• Very small fish that might be intimidated (neons, embers)
• Aggressive cichlids that may damage the elongated dorsal fins
• Fin nippers (tiger barbs) that would target the trailing fin
• Slow, long-finned species (bettas, fancy guppies)

Food & Diet

Long-finned African tetras are enthusiastic omnivores that accept virtually any aquarium food. They have good appetites and are eager feeders.

• Staple: High-quality flake food or pellets
• Frozen foods: Bloodworms, brine shrimp, daphnia, mysis shrimp
• Live foods: Brine shrimp, daphnia, blackworms, small insects
• Vegetable matter: Spirulina flakes, blanched vegetables

A varied diet that includes both meaty and plant-based foods promotes the best coloration and fin development. Live and frozen foods help bring out the metallic iridescence. Feed two to three times daily in amounts the school can finish within a couple of minutes.

Breeding & Reproduction

Long-finned African tetras are among the easier tetra species to breed in captivity. They’re prolific spawners under the right conditions.

Breeding Setup

• Breeding tank: 20 to 30 gallons
• Water: Slightly acidic (pH 6.0-6.5), soft to moderately soft, temperature 77-79°F
• Decor: Fine-leaved plants or spawning mops, mesh bottom to protect eggs
• Filtration: Gentle sponge filter
• Lighting: Subdued, morning light can trigger spawning

Condition breeding groups with rich live and frozen foods for 1 to 2 weeks. Males display their elongated dorsal fins prominently during courtship. Spawning typically occurs in the morning, with the pair scattering eggs among plants. A single spawning can produce several hundred eggs.

Remove adults after spawning, as they will consume eggs readily. Eggs hatch in 24 to 36 hours, and fry become free-swimming within 4 to 5 days. Feed fry infusoria initially, then baby brine shrimp. Growth is reasonably fast, and young males begin showing the elongated dorsal fin at around 3 to 4 months of age.

Common Health Issues

• Fin damage: The elongated dorsal fin of males can be damaged by aggressive tank mates or sharp decorations. Damaged fins usually regrow if the fish is otherwise healthy and water quality is good.
• Ich: Can occur during acclimation or temperature swings, though this species is generally resistant.
• Jumping injuries: These are active jumpers. A tight-fitting lid prevents escape and injury.
• Obesity: Their hearty appetites make overfeeding easy. Monitor body condition and adjust portions accordingly.

Common Mistakes to Avoid

• Tank too small: Their size and activity level demand a 40-gallon minimum. Cramped quarters lead to stunted growth and fin damage.
• No lid: These fish jump. An unsecured tank will lose fish.
• Keeping with fin nippers: The elongated dorsal fin is an irresistible target for species like tiger barbs. Choose tank mates carefully.
• Not enough school size: Males display their best fin development and coloration when competing with other males. Keep at least 6, with a ratio of 2 to 3 females per male.
• Expecting warm water fish: They prefer slightly cooler temperatures (72-79°F) than many tropical species. Don’t overheat the tank.

Where to Buy

Long-finned African tetras are occasionally available through specialty fish retailers and online sellers. They may be listed under the names longfin tetra, long-finned characin, or Brycinus longipinnis. Check these trusted sources:

• Flip Aquatics
• Dan’s Fish

Frequently Asked Questions

How big do long-finned African tetras get?

They can reach up to 5 inches (13 cm), though most individuals in aquariums top out at 3.5 to 4.5 inches. Their size, combined with the flowing dorsal fin of males, makes them one of the larger tetra species commonly kept in home aquariums.

Do all long-finned African tetras have the long dorsal fin?

No, only mature males develop the dramatically elongated dorsal fin. Females have a normally proportioned dorsal fin. Juvenile males also start with regular-looking fins and develop the extension as they mature, usually becoming noticeable around 3 to 4 months of age.

Can long-finned African tetras live with Congo tetras?

Yes, this is actually an excellent pairing. Both species are African tetras from the Alestidae family with similar care requirements and temperaments. They make for a stunning West African biotope display when kept together in a large enough tank (55 gallons or more for both species).

Closing Thoughts

The long-finned African tetra is one of those species that deserves more attention than it gets. A group of mature males with their dorsal fins streaming behind them as they swim through a planted tank is a sight that rivals anything in the South American tetra world. And unlike many flashy fish, they’re genuinely easy to care for.

If you have a 40-gallon or larger tank and you’re looking for something different from the usual neon and cardinal tetra crowd, the long-finned African tetra is an outstanding choice. Hardy, beautiful, easy to breed, and just different enough to stand out. That combination is hard to find in the hobby.

Recommended Video

Check out our Tetra Tier List video where we rank popular tetra species for the home aquarium:

References

• Froese, R. and D. Pauly, Eds. FishBase. Brycinus longipinnis. Accessed 2025.
• SeriouslyFish. Brycinus longipinnis species profile. Accessed 2025.

Explore More Tetras

The long-finned African tetra is just one of dozens of characin species we cover in our complete species directory. Whether you’re into African tetras or classic South American community fish, our guide has you covered.

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