Perhaps a hermit was eating some of the fins while it was
sleeping. This has happened to some. How is the fish now?

Marc


Tom Rhindress wrote:

I have 3 blue-green chromis in my tank. Normally they are highly
active, zipping around in the upper water column in search of food.
However one of them is now hanging listlessly in the upper corner of the
tank, head up, normal breathing rate. Its dorsal and pelvic fins are
ragged, not diseased looking like tailrot and finrot in freshwater fish,
more like nibbled off. Tail is fine.

I had a similar problem earlier when one of my two 3-stripe damsels was
being overly aggressive and nipping the chromis. Caught him and
returned him to LFS. Have never seen the remaining 3-stripe do the same
behavior, he's rather docile. At that time the chromises actively hid
in the rock work.

Besides the 3 chromis and 1 3-stripe the other fish inhabitants a
2 false perculas
1 mandarin
1 bi-colored blenny

Have never witnessed any aggressive behavior between them.
There is a single peppermint shrimp, completely nocturnal and a
detrivore crew of small hermits and snails

40 gal wide breeder, lots of well established live-rock and water
parameters good.

Any ideas?




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