Blunt Nose Marble Knifefish


A smaller growing and attractively marked species of knifefish known from Colombia and Venezuela, the Blunt Nose Marbled Knifefish is similar in care to its more well-known relative, the Black Ghost Knife. Unlike many other knifefish, this species is social and will do well in groups. In the wild, they typically inhabit shallow, soft water in ares with plenty of cover in the form of driftwood, leaf litter, and aquatic vegetation and should be provided with plenty of hiding places in the aquarium. A somewhat shy eater that requires small food items (frozen bloodworms and mysis work well in the aquarium), tankmates should be chosen carefully so they don’t bully or outcompete these knifefish for food.



Blunt Nose Marble Knifefish (Adontosternarchus clarkae)

Origin: Wild Colombia
Locale: Rio Meta
Diet: Invertebrates and small fish. Can be weaned onto frozen foods in the aquarium.
Adult Size: 6″+
Recommended Tank Size: 40 gallon+
Compatibility: Peaceful towards all tankmates
Preferred Water Parameters
pH:                          6.2 – 7.2
Temp:                     76-82F
Ammonia:              0ppm
Nitrite:                    0ppm
Nitrate:                  <30ppm