Common Name:
Tete Sea Catfish or Shark Catfish
Scientific Name:
Hexanematichthys seemanni
Scientific Class:
Actinopterygii
Conservation Status:
Not on the threatened species list
Habitat:
This unusual catfish is common in coastal marine, brackish waters and freshwater rivers. It is native to Pacific-draining rivers and estuaries in Central and South America. Young fish appear to favour the fresh water and migrate into salt water as they mature.
Life Expectancy:
Up to 7 years
Diet:
An omnivore but appears to enjoy frozen blood worm when in an aquarium and Blue Planet aquarium lists its diet as Fish and Peas.
Maximum Size:
35cm

Tank Breeding:
"A mouthbrooder, the few, amazingly large eggs are incubated by the male. Reproduction in the aquarium is difficult as the aquarist requires to emulate the migration from marine to fresh water and back again in a spacious aquarium. The is one verbal report of this being accomplished by an American aquarist who spawned the fish by gradually changed the water from marine to fresh water and back again over a 12 month period." from planet catfish
Interesting facts:
They have venomous dorsal spines (unconfirmed).
Private UK Aquarium:
Yes but they are difficult to keep as they grow large and their salt water needs can make it difficult. I have not found any shops selling these but a search on Aquarist classified will often find a private seller.
Blue Planet Aquarium Tank:
These Catfish are housed in a brackish tank (which is not ideal for adults as they prefer full marine) in the "where land meets sea" area. The share a tank with Scats, Monos and Archer Fish. This tank also overflows into the mud skippers and 4 eyed fish display. The two amphibious fish are occasionally seen swimming in the deeper tank.