Unexplained cory deaths

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Martinspuddle
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If they were wild caught fish, they can be tricky if the water parameters are not what they are use to in the wild. Always check with the dealer or wholesaler their origin before purchase, could be a expensive lost.

Also diet can be another issue, some fish don't take well to prepared foods, in some cases cause bloat and die.

Internal parasites are another problem. Last time I had wild caught fish, during quarantine I treated them with Paraguard and a aquatic wormer.
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taffy1972
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I'm thinking of treating everything I get from now on tbh.
BigBen
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Martinspuddle wrote: Tue Oct 29, 2024 21:30 pm Sorry to hear you've lost some @taffy1972.

Do you know if they were wild caught?
Yes, they will be. I'm not sure they've been bred in captivity. Very rarely at least.

They look slim, some lobster eggs will help them gain some weight. Are they eating?
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BigBen wrote: Wed Oct 30, 2024 7:44 am
Martinspuddle wrote: Tue Oct 29, 2024 21:30 pm Sorry to hear you've lost some @taffy1972.

Do you know if they were wild caught?
Yes, they will be. I'm not sure they've been bred in captivity. Very rarely at least.

They look slim, some lobster eggs will help them gain some weight. Are they eating?
Yes they're eating fine bloodworm frozen and live plus other foods. They are very skinny though like you say.
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plankton
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How did you acclimatise them?
Also, these don't come from Suriname but I have a feeling that these may be one that don't like live bloodworm, especially if they are wild.
I haven't used frozen bloodworm yet with mine (it's as yet to be opened), but I have used the tropical mix which has some in it.
Try the Interpet Internal Parasite treatment.
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Enjoy your fish, shrimps and snails!
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Hoplisoma Granti are Brazil. Rio Negro rings a bell.

Blood worm isn't the best as it's 96% water or something like that, and time that it's thawed, it's even less. Brine shrimp, white mosquito larvae, daphnia are all better. Lobster eggs for gaining weight are better again.
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plankton wrote: Wed Oct 30, 2024 9:25 am How did you acclimatise them?
Also, these don't come from Suriname but I have a feeling that these may be one that don't like live bloodworm, especially if they are wild.
I haven't used frozen bloodworm yet with mine (it's as yet to be opened), but I have used the tropical mix which has some in it.
Try the Interpet Internal Parasite treatment.
I drip acclimated them for about an hour.
I'll try the treatment but I'm not hopeful tbh .
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plankton
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Your acclimatisation sounds ok as long as the TDS was balanced.
I did give mine garlic the first couple of weeks I got them and they seem ok so far (about 5 or 6 weeks now, due for a move into a bigger tank soon), touch wood.
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Martinspuddle
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BigBen wrote: Wed Oct 30, 2024 7:44 am Yes, they will be. I'm not sure they've been bred in captivity. Very rarely at least.
Corydoras or Hoplisoma Granti :dodgy2: have been bred in captivity. One listing on Planet Catfish forums:
There is one spawning report here on the species CLOG page, but it provides little detail. There is detailed information at the website corydorasworld.com (note: the information there is available only to paid subscribers).
I should imagine they can't difficult to breed once acclimatised. :]
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BigBen
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Found this on Scotcat. Corrected on the spawning, but sounds a tricky one.
https://www.scotcat.com/articles/article105.htm

I've no idea what makes one species easy and one tricky.
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