Originally Posted by Crazyhermitcrab
Also it appears you only have 1 dwarf gourami, and the other is normal sized. Y advice for you is keep the dwarf gourami (red one/smaller one)
Dwarf gourami's are generally peaceful, but normal gourami's are aggressive killing machines as they grow up. They will eat your tetras and guppies. Keep the dwarf gourami. Also you can't have 2 gourami's in a 10 gallon.
For tetras get at least 5. For guppies keep the two you have, my males get along fine too. Keep the dwarf gourami. Tank seems overstocked. What filter are you running.
I know this sounds soon, but yiu need to upgrade your tank. Since yiur fish are still babies not now. But in a few months you will need bigger tank
Neons (5) (2inches)= 10 gallons
Guppy (2) (2-3 inches) = 5 gallons
Dwarf gourami (1) (2-3) = 3 gallons
Your going to need a 18+ gallon tank when they are full grown.
Both of the gouramis in the tank are the dwarf variety. One appears to be a neon blue while the other looks like a flame dwarf. The normal variety of gourami are still peaceful but they do tend to get pretty big and since fish eat what can fit in their mouth it can be an issue. However I definitely wouldn't label them as aggressive killing machines. Two together in one small tank will fight however.
As for the tank stocking check out AqAdvisor - Intelligent Freshwater Tropical Fish Aquarium Stocking Calculator and Aquarium Tank/Filter Advisor
The inch per gallon rule is a bit outdated and was originally developed for tanks back in the 60s without running any sort of proper equipment. That rule has been obsolete for a few decades now but for some reason it just refuses to die. For example: I have 6 cardinal tetras, 6 panda corys, and a betta in a 10g tank which are all fully grown. Using the inch / gallon rule I would need about a 30g tank to successfully house them but I have them in there with no aggression, sickness, high nitrate levels or even a single fish death sine the tank was set up in May (not counting a sick cardinal tetra I received). When using aqadvisor I am only at 117% of my total stocking level.
As for the rest of the stocking suggestions, I heartily agree with rehoming 1 gourami, increasing the school of tetras to 5+, and keep the guppies the way they are.
Male guppies will usually be just fine in a tank with just other male guppies.