We had Cory catfish in our tank. Never considered there might be hanky-panky going on: they are always so industrious and working busily away brushing the gravel. Then one day I saw the tiniest bit of movement in the gravel; closer inspection showed it was an itsy-bitsy, perfectly formed little catfish!We had Platies in our aquarium (yours look like Platies) that kept having babies. Far too many. I had to euthenase about a hundred of them
We had 3 adult females and an adult male, but I ended up giving the male to a friend as it was getting ridiculous.
We haven't had any live-bearing fish since. It's easier to manage the egg layers!
Obviously there had been, ahem, extracurricular activity amongst the coreys! The others probably got eaten as eggs, but this little fellow persevered somehow. He eventually grew as big as the parents and I couldn't tell them apart!
I once had angel fish that laid eggs frequently, but then ate them just as quickly.
