If you own two males, it is strongly recommended that you keep them in separate tanks, otherwise they may, as their name suggests, fight until death.
They are spawning.
The fish they stole were Japanese Fighter Fish
Hi, The Fighter fish (Siamese Fighting fish) always likes to stay alone and if some other fishes are added it will start attack or feel depressed which affects its health. But zebra fish is a good choice to keep with fighter fish as it swims so fast fighter fish cant reach it at any moment. Gold fish - is a wrong choice as it has flowing fins which makes fighter fish to attack it willingly...
yes all fish have gills.
no way! they cant because chinease fighter fish are semi aggresive and will fight with your other fish or if the other is to big the gold fish will eat him
Mosquitos
there black
A fighting fish, just google it. It's pretty easy.
You Let Them Lay Egg In It
Placing a small mirror glass in front of your fighter fish will do the job
Male betta fish tend to be very aggressive. They are best alone unless theres a special type of specie they can get along with. They like to have personal space. And as using fighter fish you probably refer to Siamese fighting fish which is betta fish
Beautiful Warrior ( Fighter )