Help! Fish look sick!

L

limelitediva

I love fishies!!
Dec 21, 2005
4
0
0
IL, USA
Help!

Hi everyone-
About 5 days ago my boyfriend and I added 3 fancy guppies to our 20 gal. community tank. The morning after we put the fancies in the tank one of them got his fin shredded, we think by our 3 neon tetras. We saw the tetras acting very aggressive towards the guppies by ganging up on one of them then swimming away. Is this normal neon tetra behavior? He survived about 12 hrs with his tail shredded before he died. Then the next day I found another fancy dead, he looked eaten a bit too! We have 1 cory cat, 1 chinese algea eater, 3 neons, and after the two guppies died we got 1 black molly and 1 male swordtail. Not much longer after the last guppie died in a similar fashion, I noticed that the black molly is starting to get a yellowish tip along his dorsal fin. THEN, this evening I noticed that the black strip on our chinese algea eater has faded! I just have no idea what is making our fish so sick.
 
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If I had to guess I would blame your chinese algea eater. I am fairly new to this hobby but just had similar fatalities with my fancy guppies, and it was my algea eater killing them. I guess the older the CAE gets the more agressive they become. Thats my thought, but what do I know. Someone else might have another idea. Elizabeth :(
 
My fiance and I just changed between 25 and 50% of the water about a week ago, on the 15th.

While the guppies were alive I never saw the CAE bother them once. He usually just stuck to the bottom of the tank, him and my cory get along great!
 
I sincerely doubt that the neons are the aggressors, and I would also suspect the chinese algae eater first. They are known to do these types of things.

I've actually never heard of an aggressive neon. I've two, and that's not a school so if they had any aggressive tendencies it would show up, and they swim near my two ¼" platy babies all the time. The babies are not afraid of them at all so the neons must have shown no aggression towards them. They flee in terror if any of the other fish come close, especially the clown loaches.

Roan
 
Hey guys, it's limelitedivas fiance, recently we got rid of the last fancy we had and replaced him with a black molly, but now our black molly is loosing color from his tail and is getting a yellow strip on his top fin. Any ideas of what this could be?

TIA
 
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