fish tank

I have a 30 gallon tank and recently bought a new angel. I have two now, and I believe that they are a male and female, although I'm not a hundred percent sure. I have recently noticed that the female (who is larger than the male) has frayed and nipped fins. The male also seems to have these. I...

My tank has been going for over a month now. It's a 10gal with pump and and air stone wall along the back. I also have a heater but my water has been a little on the warm side laity so it have it turned off right now. I have 4 guppies and 4 neon tetras currently in the tank. I'm currently...