Gouramis Male Or Female

It's quite unusual for gouramies to eat plants. Are you sure they're not just eating the diatoms?

It might therefore be a good idea to give the gouramies some other vegetable matter to eat, the usual suggestions being blanched courgette or cucumber. Some fish need vegetable matter in their diet and will usually take the easiest they can find. Of course, they could just be hungry, I do feel sometimes people are so obsessed with the worry about "polluting" their tank with uneaten food that they feed too little, or not often enough (which is not always the same thing).

I often give my fish peas and French beans, though they don't seem fussed on cucumber. Getting any food to my gouramis is difficult with the greedy platies and tetra in the tank though. I'm tempted to try and grow my own daphnia as a live food source but haven't had the courage to give it a go yet...