Quick care card
Use this card as a starting point. Always check whether your aquarium is stable enough for sensitive species.
Difficulty
Difficult
Behavior
Filters and may spend extended periods in shelter.
Feeding
Direct fine particles towards the occupied shelter or perch.
Breeding
Do not expect a self-growing freshwater colony.
Best match
A spacious layout designed around shelter and food delivery together
Important
Extended hiding makes food access harder to follow. Do not assume an unseen animal receives enough food.
Care in practice
Alongside temperature, GH, KH and pH, follow filtration and oxygen provision. The mechanical study of Atya fans explains filtration in current but does not establish aquarium water readings or pump settings. Match the system to the actual animals and check changes after feeding and maintenance. Do not deliberately dirty water to make it seem food-rich.
Provide secure cavities and passages where adults can fit and turn. Direct food-bearing water past accessible entrances and retain calmer places. Ensure rocks cannot shift. Observe the occupied site before moving pumps; do not pull an animal from shelter simply to make it visible.
Offer a small portion of suitable fine food and check that it reaches the occupied site. Benue field research found varied stomach contents; this does not show that one powder or filter waste provides a complete diet. Follow condition and uptake over time and limit decay. More powder cannot fix an inaccessible feeding route.
Assess tank mates for disturbance of shelters and food access. Large size does not make the shrimp invulnerable during moulting. With several animals, provide separately usable refuges and feeding stations rather than treating a fixed group size as sufficient assurance.
Eggs or observed larvae do not establish that rearing will succeed in a community aquarium. These sources do not supply a fully checked home protocol for A. gabonensis. Do not change the adult aquarium to saline water based on general breeding advice for other fan shrimp.
Background and identification
Fans, colour and identification
Research on Atya gabonensis describes the fine structure of its filter fans. Its feeding route therefore differs from surface grazers in a dwarf-shrimp aquarium. Blue, brown or paler appearance alone does not diagnose disease or establish a separate species; assess behaviour and condition too.
The most useful observation point is the site chosen by the animal. Record when it fans, where food passes and whether access declines after changes. Look at quiet times without constant disturbance. With sudden abnormal behaviour, use the problem approach.
The separate Vampire shrimp feeding-route article develops this approach. Compare Atyopsis moluccensis if you are still choosing a fan shrimp.
Sources and review
Sources for accepted names, classification and synonyms.
- Liao and colleagues (2023): High stability in filtration apparatus of African shrimp
Laboratory observation and mechanics of Atya gabonensis filter fans. Experimental flow is not an aquarium pump setting or care optimum.
Sources for water values, temperature and stable care.
- Marijke Puts, The Shrimp Farm: Vampire shrimp care
Keeper/seller advice on shelter, space, targeted particles and flow. Suggestions to dirty water, squeeze filter waste into the tank and a claim that larvae hatch in saltwater are not adopted.
Practical sources for setup, feeding, behavior and breeding.
- Liao and colleagues (2023): High stability in filtration apparatus of African shrimp
Laboratory observation and mechanics of Atya gabonensis filter fans. Experimental flow is not an aquarium pump setting or care optimum.
- Obande and Kusemiju: Food and feeding habits of Atya gabonensis
Abstract of stomach-content study from the Lower Benue reports algae, diatoms, insect parts and detritus. Does not test an aquarium diet or prove that dirty water feeds shrimp adequately.
- Marijke Puts, The Shrimp Farm: Vampire shrimp care
Keeper/seller advice on shelter, space, targeted particles and flow. Suggestions to dirty water, squeeze filter waste into the tank and a claim that larvae hatch in saltwater are not adopted.
- UF/IFAS: Dissolved Oxygen for Fish Production
Gas exchange, respiration, organic oxygen demand and aeration. Fish concentration thresholds and outdoor-pond operating schedules are not transferred to shrimp aquaria.
- UF/IFAS: Ammonia in Aquatic Systems
Nitrogen chemistry and biological filtration; fish thresholds are not used as shrimp thresholds.