Sleeper Dolphin Catfish (Cetopsis cf. parma)


An unsual catfish found in some Western Amazon tributaries, the Sleeper Dolphin Catfish is a specialized predator/parasite adapted for feeding on larger fish and dead animals in the wild. Their common name comes from the local name for the fish, “dormilon”, which reflects their nocturnal nature. Less of a predator than some relatives, they will readily accept prepared foods in the aquarium and tend to ignore tankmates too large to be eaten.


Sleeper Dolphin Catfish (Cetopsis cf. parma)

Origin: Wild Peru
Locale: Rio Amazonas outside Iquitos
Diet: A parasite in nature, will accept protein rich frozen food in the aquarium
Adult Size: 6
Recommended Tank Size: 40 gallons
Compatibility: Although parasitic on large fish, they will usually ignore medium sized active tankmates

Preferred Water Parameters
pH:                          6.5 – 7.2
Temp:                     76-82F
Ammonia:              0ppm
Nitrite:                    0ppm
Nitrate:                  <30ppm