My betta Red has been a great fish with no problems for the last year, and just today, his color changed DRAMATICALLY and his fins look like they, all the sudden out of nowhere, have fin rot. The fins look jagged, and they also look transparent. He is a deep red betta with lots of color. He seems to be turning yellow. He also wont eat. I have done nothing different with his care except one thing... I went away this weekend and my father fed my fish while i was gone. Red usually eats a few blood worms and some flakes every day. A while ago, i bought a product called Aqua Select freeze dried Tubifex worm cubes. I gave it to him once, but he ignored them, so i never gave it to him again. Anyway, while i was away, apparently i ran out of bloodworms so my dad gave Red a cube of the tubifex. I was only away two nights, so he did not give it to him more than once. Im not sure if this is the problem, but it was such a dramatic change that i cant think of anything else.
a couple details:
hes in a 3 gallon bowl, temp is 81 degrees, i cleaned his bowl yesterday and added a teaspoon of aquarium salt as i always do, plus conditioner. He did not yesterday nor today at all. He doesnt seem to be skittish and is not rubbing up against the rocks or his aquarium decoration. He seems to just be hanging out at the top of the water line in a vertical position and taking breaths when he needs to. i posted before and after pics below. They dont show much detail... its hard to get a good picture with my iphone. Please help if you can!! i love my fish and am very worried.
You cant see the transparency of his fins, but they almost look clear.. the best way i can describe them is it looks like the skeleton of a leaf, if that makes any sense to anyone.