03-21-2011, 07:34 PM
| || |
In a 120g long tank with 10 kribs that may be pairing up/spawning, I wouldn't put much else in there, if anything at all. You could take a tank that can work as it is and turn it into a war zone quickly that way. Kribs tend to be very good parents and very protective of their young, spawning grounds/territory, etc.
As for what size/age they can begin to spawn... that does differ a little from fish to fish, but usually by about 1 yr of age they can begin pairing up. Size is not a good indicator of such things since level of care plays a big part in growth rate.
If there is a chance of mixing anything into that tank somewhat peacefully you might want to consider standard gouramis, gold or green severum, or possibly a small school of tiger barbs, green tiger barbs, or albino tiger barbs. If attempting something of this nature you will want to be sure the tank is heavily decorated at all levels of the tank. (upper, middle, lower) And you will want to keep an eye on things closely, be aware of the potential for conflict, and have a QT tank of suitable size on stand by in case it doesn't work out. That would buy you time enough to decide what to do with the other fish without having to lose lives.
I hope this helps.