So until recently i had a pair of GTs in a 75. The only tankmate is a 7" L37 pleco that they don't really mess with. The male is 5+" and the female is just barely 3". They've spawned about 5 times so far. They had a spawn until they seemed to just dissappear overnight about 10 days ago. Around 4 days ago I turned on a new canister filter on the tank (upgrading from 265gph to 370gph).
At about this time i noticed the male constantly harrassing the female. Up until this point the female usually bullied the male depite the size differnece. But because he's so much bigger i had to take her outso she didn't get torn up worse. I was thinking that introducing the new filter would have messed up established territories and thus caused the aggression. But i also began having trouble getting both fish to eat a few days ago. They will each get the food, chew it up, and spit it out. I'm worried about the possibility of parasites(look at his white poop in the pic above) but have no idea where they would have gotten them. The only live food they've ever had is ghost shrimp every 2 weeks or so. Besides that they eat sinking hikari cichlid gold, with treats of spirulina brine shrimp, blood worms, and beefheart(very rarely)
