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FAQs on  Corydoras Cat Genetic Disease

FAQs on: Corydoras Catfish Health 1, Cory Disease 2, Cory Disease 3, Cory Disease 4
FAQs on Corydoras Catfish Disease by Category
: Environmental, Nutritional (e.g. HLLE), Social, Infectious (Virus, Bacterial, Fungal), Parasitic (Ich, Velvet...), Treatments,
Related Articles: Callichthyid CatfishesSummer loving: cats in the garden, kittens in the kitchen by Neale Monks,

FAQs on: Corydoras Catfish 1,
Corydoras Catfish Identification, Corydoras Catfish Behavior, Corydoras Catfish Compatibility, Corydoras Catfish Stocking/Selection, Corydoras Catfish Systems, Corydoras Catfish Feeding, Corydoras Catfish Reproduction,
FAQs on: Panda Corydoras, Pygmy Corydoras spp.,

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Callichthyids 1, Callichthyids 2,
FAQs on: Callichthyid Identification, Callichthyid Behavior, Callichthyid Compatibility, Callichthyid Selection, Callichthyid Systems, Callichthyid Feeding, Callichthyid Disease, Callichthyid Reproduction, Catfish: Identification, Behavior, Compatibility, Selection, Systems, Feeding, Disease, Reproduction


Cory Color, Illness - 05/07/2006 Hello, <<Hello, Judy. Tom here.>> A question that I haven't seen posed...my Schwartzi Cory has a white area above the barbels...only white, not inflamed, but it doesn't seem to be going away...or getting worse. <<Might be genetic, Judy.>> The LFS had me dose a little with Methylene blue, but other than that have left it alone. <<Not a "bad" call on the part of the LFS but, as you're aware, Methylene Blue can/will play havoc with your beneficial bacteria and plants. Generally, it's best not to treat until something specific has been identified.>> His activity is fine-appetite good, also. He's in a 20-gal with testing coming out at 7.0-0-0-5.0 Any ideas or feedback would be greatly appreciated. <<There's certainly no problem with your readings and given that his appetite/behavior is good, I don't see reason for concern here. In my experience with Corys, coloration changes concurrent with a "problem" affect the entire body of the fish. Typically, the fish becomes more "pale" with diminished coloration overall. They also become almost completely inactive and stop feeding, which doesn't seem to be indicated in your case.>> (I'm wondering if it has anything to do with vacuuming with the water changes....am I not doing a good job?. the gravel is natural and not large.) <<As long as you vacuum deeply - all the way to the bottom - when cleaning your gravel, you're doing a good job. Also, a substrate that would be inappropriate for foragers like Corys would be expected to affect the barbels, not necessarily the coloration of the snout.>> Thanks a Lot, Judy <<You're welcome, Judy. Tom>>

Cory constantly moves, and has missing chunk 11/17/06 Dear Expert, I am so thankful to be able to have someone to ask about my poor fish. I have a 12 gal. tank with a couple of Corydoras agassizii, a male Betta, and 4 male guppies. The temp is kept at 78-80 F, water parameters are normal, pH 6.8 to 7.0, negligible ammonia, nitrates, nitrites, etc. and I do a 3 gal. water change with aged water every week. <So far, so good> All fish appear healthy and are eating well except one Cory. I first noticed 3 days ago that he was in constant motion - not swimming, but staying in place and just shimmying. <Strange> At first, I thought he was looking for food, as the motion was similar, but he never stops. His fellow Cory just sits on the bottom, then will look for food, and stop again. I also noticed a pale spot at the front of the dorsal fin, almost as if bleach had been dropped on the Cory's back. Now, there is a chunk if flesh missing from the Cory's back. <Mmm, there is nothing in the tank that would "bite" a piece out... Is there a piece of gear... a pump or such that might do this?> I can't find any similar reference to the movement as it's not jerky, frantic, or flashing. I don't want to use salt, <I would not> as I've read that Corys are sensitive to salt. Do you have any idea as to what his problem might be, and what I can use to heal him? Thank you for your advice. <This could be some sort of "time bomb", nervous/genetic disorder in the one fish... I am torn between urging you not to "treat" with anything for fear of disrupting biological filtration, hurting water quality... and suggesting something innocuous... Bob Fenner>
Re: Cory constantly moves, and has missing chunk 11/17/06
Thank you, Bob, for the response. I couldn't find anything mechanical, and the missing chunk kept getting bigger. The Cory died, so fortunately, I don't have to treat and mess up the stability of my tank. I'll watch to see if other fish are effected, but so far, the rest are doing great. I agree with you that the problem is more than likely specific just to the one Cory. Thank you again for taking the time to answer my question. <Thank you for this update. Life to you my friend. Bob Fenner>

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