They develop dark horizontal lines the length of their bodies.
because it is territory or maybe if they both want to mate the same female they will fight and the winner goes to the female if she allows it
Betta's are pretty good with other fish, it's rare that they will fight, maybe with other betta's
the female will get fat then they will mate
Unless the female is ready to mate, you should keep a divider between them.
Yes all bettas can mate with other bettas. " regular betta fish" there are different types and they can all breed together.
yes, he can wait apx 16 days after first breeding
spawning embrace
Yes,but those betas can not have baby's together!
Yes. Female bettas of all ages can live safely with other female bettas. Female bettas, unlike males, are not violent. Actually, they are quite docile and calm.
Yes, crowntail females can mate with halfmoon males, and vice versa. Any type of betta can mate with any another type. Veiltails with halfmoons, deltas with crowntails, etc. But most people prefer to breed bettas with their own type because they plan to sell them, and most people don't want "mutts". They can also keep the coloration, finnage, and physical characeteristics of the betta type. It is much easier to sell these purebred bettas. If you planning on breeding the crowntail and halfmoon and selling, I highly suggest that you reconsider this. Get a two quality bettas (same type) from a good breeder. Enjoy your fish!
to make more bettas
NO female bettas do not fight each other