My 225 gallon tank seems sort of empty and boring lately, with practically no color (with the exception of my flagtail's caudal fin), and an extreme lack of activity apart from my arowana pacing back and forth. So I'm considering the possibility of getting something to liven it up a bit, but the problem I'm having is coming up with a species that is relatively colorful and large enough to fill in some of the empty space (I'm thinking 10-16"), and fairly fast-growing, while not being too aggressive to keep with my eel and flagtail. Options I have thought about so far are:
Oscar - possibly too aggressive?
Severum - grows a bit too slowly
Red Bay Snook - from what I've read, males can get up to 20" (although I've never seen one larger than 14", personally), but otherwise would possibly work
Vieja sp. - most of them are too hard to find around here, and possibly aggressive
Jade Goby - I don't know much about them
Tinfoil Barbs - could work
Midas Cichlid - possible aggression
Jack Dempsey - slow growth rate
Datnoid -slow growth rate
So are there any possible options I'm just not thinking of for some reason and/or any rebuttals for the reasons I gave for the above species not working out? One thing I'm really wondering about is how one of the larger cichlid species might fair with my eel... I know cichlids are generally not to be mixed with eels if they are going to be be grown out together (due to the fragility of younger eels), but what I wonder is if they would be okay with an eel that is already 20" long...
Oscar - possibly too aggressive?
Severum - grows a bit too slowly
Red Bay Snook - from what I've read, males can get up to 20" (although I've never seen one larger than 14", personally), but otherwise would possibly work
Vieja sp. - most of them are too hard to find around here, and possibly aggressive
Jade Goby - I don't know much about them
Tinfoil Barbs - could work
Midas Cichlid - possible aggression
Jack Dempsey - slow growth rate
Datnoid -slow growth rate
So are there any possible options I'm just not thinking of for some reason and/or any rebuttals for the reasons I gave for the above species not working out? One thing I'm really wondering about is how one of the larger cichlid species might fair with my eel... I know cichlids are generally not to be mixed with eels if they are going to be be grown out together (due to the fragility of younger eels), but what I wonder is if they would be okay with an eel that is already 20" long...