can someone help me regarding my crowntail. I've had him for about 3 months. he lives on his own in a 20 litre aquarium, temp about 28 degrees with a box filter,two or three cabomba plants and 2 half coconuts and 2 pieces of bog wood with no lighting other than normal daylight, but he is not in direct sun. We feed him twice a day with a variety of either live food, frozen or betta pellets or tropical flake.
he seems to be a little fat its been like it for a while but my son noticed today that he seems to have a sort of semi transparent bubble on his little fat tummy like a blister.My son has put a female in with him to see if he will breed, he builds a bubble nest and embraces the female but after three attempts we have had no hatchlings.The female is still in with him at the moment. Does anyone have any thoughts about what i can do about this, it certainly doesn't seem to be normal. I have had other bettas and I have three females who are fine.
any info would be great