I have a 7 inch gulper and a trachy cat for about a year now. I hand feed both of them silversides and earthworms. I introduced a tig to the tank and they won't eat by hand anymore. In fact I haven't seen them eat for about 2 wks. I watch the tank and notice the Tig eats everything. I add extra food to the water after the tig is full, only to wake up and find the silversides still there(destroying my H2O quality) and what seems like partically digested night crawlers.. Don't know what to do?