[Reece_Huff]

Hello! Right now I have a low-tech

20 long with 2 huge and growing pearl weed bushes in the back corners and trying to establish dwarf chain swords in the front. and yes, I see the algae. but that has nothing to do with my question. If I added a trio of rocket killifish would they spawn and should I expect fry? Will the otos eat the fry of the rocket killi or would the killi make a quick snack of the oto eggs? what other nano fish will breed well with otos in a heavily planted tank?

 

[ichthyogeek]

Would they spawn) Maybe, I think that depends on water parameters.
Will otos eat rocket killi fry) Most likely not. Maybe one or two eggs, but nothing too severe.
Will killis eat oto eggs) Most likely not.
Other nano fish that will breed well with otos) Almost any of the mid or top swimming fish.

Otos are pretty good at just being chill little fish. You'll almost always get the most productivity in monospecies tanks, but those're hard to keep interesting. 1-2 species in a 20L is perfectly fine though. My personal plans are to have 3 different groups in a similar footprint tank, but remove groups for spawning as wanted.