My Cory Is Hurt!

[newfishaddict]

My cory is hurt! I don’t know why?! In my 21g I have 18 young neon tetras, three albino cories, one white cloud mountain minnow, and one red eye tetra. Today Half of my cories caudal fin?? (tail fin) is gone!!! There have never been any signs of aggression in the tank. Some times the tetra will chase a neon but nothing ever serious. I have a bit of a snail problem in the tank and today I see a snail that is about 1/3 inch diameter; I have heard that snails can hurt fish but I don’t know…..

One of my corries is 1 ½ inches(very fat), one is 1 inch, one is ½ and inch long(new guy). The injured corrie is the 1 inch one. Could it be the snail? Or the large corrie? Or the lone tetra?

I know the tetra should be in a shoal and I am going to do that soon, perhaps I should very soon…..

Also, the two older corries have very dark bellies, and my substrate is black coarse “sand like”; could it be accumulating in their “guts” ??? It seems unusually dark around their belly and underside….

And, there have been no signs of disease such as fin rot....

PLEASE give some help/advice….

 

[WILDER]

You have a bacterial infection as darkening in colour is an indication of a bacteria infection, also you could have bacterial finrot, you will need to medicate can you isslate the sick fish, also can you post water stats in ammonia,nitrite,nitrate and ph.

Not the writer of this information below.

Fin or Tail Rot (see photos) Fins that are badly torn or frayed for reasons other than fighting will usually indicate fin or tail rot. Fin or tail rot is a bacterial disease that usually attacks weak or minimally damaged fin edges. Once established, the bacterium consumes the fin as it works its way up toward the fish's body. This causes the fins to appear frayed or ragged or in severe cases nearly stubs. Frayed fins can also be a sign of water problems in which case the pH, ammonia, or nitrites are too high. You should check your water conditons before treating. The best prevention is to maintain accurate water conditions. Sometimes the salt level will be too high. This can cause the effects of fin-rot. Symptoms: The fish's tail or fins are ragged, frayed or appear to be shrinking or decaying. Goldfish may have red streaks in their veiltails. Treatment: It is best treated with an antibiotic. There will be one best suitable at your local pet store. Make sure it states that it treats Fin or Tail Rot. In some cases a secondary infection or fungus will appear. If this is the case, treat the fish for the fin rot and then proceed to the fungus problem.(

 

[newfishaddict]

You have a bacterial infection as darkening in colour is an indication of a bacteria infection, also you could have bacterial finrot, you will need to medicate can you isslate the sick fish, also can you post water stats in ammonia,nitrite,nitrate and ph.

Not the writer of this information below.

Fin or Tail Rot (see photos) Fins that are badly torn or frayed for reasons other than fighting will usually indicate fin or tail rot. Fin or tail rot is a bacterial disease that usually attacks weak or minimally damaged fin edges. Once established, the bacterium consumes the fin as it works its way up toward the fish's body. This causes the fins to appear frayed or ragged or in severe cases nearly stubs. Frayed fins can also be a sign of water problems in which case the pH, ammonia, or nitrites are too high. You should check your water conditons before treating. The best prevention is to maintain accurate water conditions. Sometimes the salt level will be too high. This can cause the effects of fin-rot. Symptoms: The fish's tail or fins are ragged, frayed or appear to be shrinking or decaying. Goldfish may have red streaks in their veiltails. Treatment: It is best treated with an antibiotic. There will be one best suitable at your local pet store. Make sure it states that it treats Fin or Tail Rot. In some cases a secondary infection or fungus will appear. If this is the case, treat the fish for the fin rot and then proceed to the fungus problem.(

I have ammonia and nitrite <0.1ppm (not detectable) I have nitirate of 5ppm. Ph =7.2 KH=100 Are you certain about your diagnosis? I look at my fish every day and wouldnt fin rot take some time?

My corries are albino and thus white, are you sure it is just not that their organs are darker?

I dont have an isolation tank yet....I could treat the 21g tank.....? do you agree?
I will go get a 10g for an isolation tank but it would not be cycled....I could use a used filter so it cycles very fast(my 55g never had any detectable nitrite or ammonia since day one, using a mature power filter from another tank)....

I have a medication here called "KanaPlex" it has 40% kanamycin sulfate; would this be a good medication for fin rot??? Thanks

Thanks

 

[WILDER]

Never heard of that med, as long as it bacterial, corys are very prone to bacterial infections , messaged inchworm if your'e not sure, she is a mod and is the cory expert, good luck.

 

[WILDER]

Not the writer of this information below.
Fin Rot



Symptoms:

Fish may have deteriorating fins, often with red or white edges. Secondary Fungal infections often occur.



Cause:

Bacterial infection caused by Aeromonas and/or Pseudomonas bacteria often precipitated by poor water quality, low water temperatures, or a combination of both.



Treatment:

You will first want to determine the specific cause of the illness, so check your water’s quality Ammonia, Nitrite, pH, and Nitrate levels as well as the temperature. Be sure to provide optimal water conditions and the correct water temperature for the species of fish you are keeping. Treat with Kanacyn, Tetracycline, Furacyn, Nitrofura-G or Penicillin. Basically, you want an antibiotic specific for Aeromonas and Pseudomonas bacteria. The use of a medicated food is also wise. Treat the fish in isolation (i.e., quarantine tank) if only one fish is sick. If not, the whole tank should be treated. In either case, water conditions must be improved and proper temperature maintained for all fish. Adding salt to the water may be helpful.

The success rate for treating Fin Rot is good providing the illness is caught early and water conditions are kept optimal. Left untreated this infection can be deadly. Early treatment is essential! Once treated, fin tissue lost to this illness will grow back providing the fin rays and/or fin bases have not been damaged.