Help! I'm new to all this and I think my Guppy's sick!
2-3 weeks ago I bought 3 guppies, (2f, 1m) and added them to a tank where I had 5 little tetras (3neon, 2 black). 2 days later, I found (and saved) 18 fry - buying a birthing tank thingie to keep them in. a few days later, the one I...