Orthosternarchus: Greek, ortho = straight + Greek, sternon = breast + Greek, archos = anus
Orthosternarchus tamandua is a shy, secretive and nocturnal species which is quite rare in the wild where little is known about it. They live in deep water and are almost blind but they do have a mildly electric field around them which may help them to navigate and hunt where visibility is very poor. The eyes of this species are asymmetrical and when viewed from above one eye is further forward than the other. In captivity they seem quite prone to bacterial infections from what little information there is. Because this is obviously such a specialised fish and that so little is known about it we recommend that it is not really a suitable subject for the aquarium.
Full description of Orthosternarchus tamandua
In the aquarium, reports suggest that Orthosternarchus tamandua is a very fussy eater and usually refuses all but small live food. Orthosternarchus tamandua has a very small tube like mouth and so small items of food are all that it could manage.
It isn't known if there are any visible differences between the sexes and nothing is known about this fish's breeding habits.
It has never been bred in captivity.
Orthosternarchus tamandua is known to be quite rare in the wild but no studies about the health of wild populations have been carried out so the real status of this fish has not been evaluated.
pH: 6- 7?
dGH: 4 - 12?
Temperature: 26 - 30°C (79 - 86°F)
Size: 44cm (17.5in)
Min tank size: 675 litres
Difficulty level: Do not keep
Aquarium type: Species
Swimming level: Lower
Origin: South America: Amazon River basin, Brazil.
Habitat: Deep river channels away from shallow water. Orthosternarchus tamandua doesn't enter the flooded forest but remains in deep water. Found in both white water and black water
Species: O. tamandua
Synonyms: Sternarchus tamandua.