Is it realistic to keep a Sternarchorhynchus Goeldii long term in a 200x60x65cm aquarium?
- Thread starter fish101
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I don't know much about them if my conversation is right you tank is 78" ~x 24 ~× 26"~ which is around 190 gal~ . Quick search says they get to around 12" i think you would fine
Tank dimensions are fine for most Sternarchorhynchus spp. though it may start looking cramped as they grow out due to the width. Still not terribly problematic given 60cm width and 2metre length. Like with other Gymnotiformes they are long/skinny/flat, not very bulky.
Tank-mates are always more of a concern with knife-fishes.
Finding true goeldii would be a bit difficult; not because they're gatekept or especially rare, but moreso as no collector or exporter typically chooses to try to identify various Sternarchorhynchus spp. and merely exports them as oxyrhynchus or Sternarchorhynchus sp.
You would likely have to comb through larger Peruvian exports yourself and look at meristics to identify the offered knife-fishes on a species-level.
Tank-mates are always more of a concern with knife-fishes.
Finding true goeldii would be a bit difficult; not because they're gatekept or especially rare, but moreso as no collector or exporter typically chooses to try to identify various Sternarchorhynchus spp. and merely exports them as oxyrhynchus or Sternarchorhynchus sp.
You would likely have to comb through larger Peruvian exports yourself and look at meristics to identify the offered knife-fishes on a species-level.
Nice! Yeah i am aware of the problem, not too problematic, the store that could import them are extremely strict with the wellbeing of the animal. Everytime they have to do a special order, they do research on the fish first and they also listed on thier website: Fish over 1m long and/or very rare are only being sold to the owner once the owner informs about the tank dimensions and water parameters, if the owner fails to inform, then the fish will not be sold to the owner. About the Misidentification issue, most other Sternarchorhynchus species (mormyrus, retzri etc.) are actually goeldii's in the Aquarium trade since Goeldii's are easier to come by from what i think. The wholesaler of the shop is the ruinemans group they have managed to import 4x Sternarchorhynchus Oxyrhynchus (XL) in semptember 2025, I think they would import the Goeldii's as Sternarchorhynchus sp but i think due to the scrictness of my LFS they would probably make sure it is a Goeldii.