Originally Posted by Gizmothefreaky
I have kept cories in groups of three easily in a five gallon in the past. :3 and i currently only have three otos, though technically they are only one in each section of my divided tank... so that doesnt count. And the neons i have kept have actually been fairly hardy, but that is from purely personal experience i suppose.
I highly suggest that you do not listen to this (not to be a jerk, sorry) -but these fish should not be kept in such a small tank for many reasons:
There is not enough room to swim/scavenge
The bioload is too high even for a well-cycled tank
Even if they grow only to two inches, that's six inches of fish in a 5 gallon. Thats so cramped, its like living in one room, too small for you already, and then adding in a bunch of other people.
Otos need pals, they need at least one friend, best yet two. To keep them apart will cause them stress and discomfort.
Neons arent really hardy, so yeah- thats mostly personal... Theyre very sensitive to fluxuations in the tank and need a well established, cycled tank of at least 10 gallons with 4-5 friends, at least.
OP, if youre looking for shrimp at a good price, try bobstropicalplants.com- he sells em cheap and ships them cheap. However, in a small tank (yes, 2.5-5 gallons is considered small for anything but a single betta..) they may be eaten. Theyre also very sensitive and should live in a cycled tank to keep them alive and healthy.
Focus on keeping your fish alive and happy for now. You seem nervous about it, so maybe pushing your luck isnt a great idea. The more fish, the more that can happen, and none of us want to see your little friend get hurt!