I currently have a 29 gallon tank with 3 otos, 6 small tetras, 3 volcano rasboras, 1 bristlenose, 1 red hump geo and 1 salvini. As far as space goes I'm sure I have enough room. Now I know that I will soon have to upgrade to a 55 when the Geo and Salvini get bigger. I just want to know if these two fish (the geo and salvini) are compatible. The Geo is about 2.5-3 inches and the Salvini is slightly smaller at 1.5-2 inches. The geo has been chasing the salvini around the tank and nipping his fin a bit. I dont want this to stress the Salvini too much. Its a bit hard to feed the Salvini too b/c the Geo steals his food. What a jerk! I know hes full. Lol. Any help would be appreciated.