Vampire Shrimp
Atya gabonensis
Min Tank Size
75L
Adult Size
15 cm
Lifespan
5 years
About
Native to West Africa and parts of the Caribbean, Atya gabonensis goes by a name far more dramatic than its personality deserves. These are genuinely enormous shrimp, routinely hitting 12 to 15 cm, with a chunky, armored build that makes them look almost prehistoric. Coloration varies quite a bit depending on mood and water conditions, shifting between slate blue, dusty gray, and warm brown tones. Males tend to run a bit bluer. They're a spectacle in any tank.
Unlike most ornamental shrimp, vampire shrimp are dedicated filter feeders. Instead of scavenging, they extend specialized fan-like appendages into the current and collect microscopic food particles floating past. This means current matters. Without a decent flow, they'll just sit there with their fans closed, slowly declining. A powerhead positioned near a favorite perching spot, or a good spray bar, makes a huge difference in how active and healthy they stay.
Water quality needs to be solid. They're not as fragile as neocaridina or caridina shrimp in terms of parameter swings, but they do respond poorly to ammonia spikes and copper in any form. Soft to moderately hard water suits them well. Temperature should stay warm, somewhere in the 24 to 29 Celsius range, which aligns nicely with most tropical community setups.
Feeding is where most people trip up. These shrimp won't thrive on leftover fish flakes drifting past. They need fine suspended matter, liquid invertebrate foods, powdered spirulina, or similar products added directly into the current near them. Done right, you'll see those fans go to work and it's genuinely one of the more mesmerizing things you can watch in a planted tank.
Water Parameters
Temperature
°CpH
GH
dGHKH
dKHSwimming Level
Flow Preference
Compatibility
These shrimp work well with peaceful community fish that won't harass them. Good matches include small tetras, rasboras, corydoras, otocinclus, and similarly sized peaceful species. Avoid anything predatory enough to attack a large invertebrate, like large cichlids, large gouramis, or any fish with a reputation for picking at crustaceans. They coexist fine with smaller neocaridina and caridina shrimp, snails, and other peaceful inverts. In a biotope sense, West African species like congo tetras make a thematically appropriate and practically compatible pairing. Larger tanks give everyone room to settle into their own zones without stress.
Commonly kept with
Species this one is most often paired withCommonly tried but avoid
Often paired, but shouldn't beCare Notes
The most common mistake is not providing enough flow. A vampire shrimp that can't filter feed will slowly waste away even in otherwise good water. Aim for a moderate current directed toward a hardscape feature they can perch on, like driftwood or a rock. Supplemental feeding with liquid invertebrate food or powdered fry food added near the current is essential in most tanks. Never use copper-based medications or treatments in any tank housing these shrimp. Molting individuals need cover, so caves, coconut shells, or dense plant clusters help them hide and recover safely.
Behavior & Aggression
Vampire shrimp are about as non-aggressive as freshwater invertebrates get. They show no meaningful hostility toward tankmates, conspecifics, or even much smaller creatures sharing their space. The name is pure theater. During feeding, multiple individuals may cluster around the same flow source without any conflict. The only real concern is that their size and occasional movement can startle smaller, skittish fish, but that's not aggression on the shrimp's part. Molt periods make them temporarily vulnerable, not dangerous.
Things to Know
- Requires moderate flow to filter feed, powerhead or spray bar recommended
- Will molt and become very vulnerable, provide hiding spots
- Needs fine particulate food (liquid fry food, powdered spirulina) to thrive
- Sensitive to copper-based medications, remove before treating tank
- Requires water flow and suspended food to survive.
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