what corys should not be kept together
- Thread starter lilbri
- Start date
I don't get the idea that is as much an issue with corries as it is with some fish. Some creek collection sites will have half a dozen corydoras species all swimming together. So they have some selection ability or that situation couldn't exist. If there was a risk of crossing, the conventional wisdom is that no fish from the same genus should be kept together, and since Corydoras is the genus name that covers all of them, the answer would be none can be kept together.
I don't know that it would be an issue, but you could monitor yours and not raise any of the offspring if you do get any cross species loving.
I don't know that it would be an issue, but you could monitor yours and not raise any of the offspring if you do get any cross species loving.
1) I think corys would rather breed with their own kind, but not too sure about that.
2) If they do "cross breed" the offspring would probably be sterol.
2) If they do "cross breed" the offspring would probably be sterol.
It's not a simple topic. In general, corydoras don't seem to cross breed much, but there have been reports of it. Since there are so many different types of corydoras, it's hard to give you a list of corydoras that won't produce hybrids. There have been some threads on this at the forums at www.planetcatfish.com, if you want to do some research.
^What they said.
The sheer number of Corydoras species and the lack of reports of hybridization makes it hard to say 100% whether species A and species B will cross or not.
The sheer number of Corydoras species and the lack of reports of hybridization makes it hard to say 100% whether species A and species B will cross or not.
Actually cory's do cross breed in aquariums quite easily. They don't do it in the wild because they have different mechanisms that prevent it (i.e. different strategies, different times of year that each species spawns, etc...). These same factors often don't come into play in aquariums so hybridization does happen. Most of the Aspidoras sp. in the U.S. are likely hybrids. Nearly all of the aeneus in the hobby are hybrids of aeneus and melanotaenia.
As a general rule you can keep a long snouted cory and a short snouted cory together without any worries of hybridization. But keeping two of the same body type together increases the risk of hybridization.
As a general rule you can keep a long snouted cory and a short snouted cory together without any worries of hybridization. But keeping two of the same body type together increases the risk of hybridization.
From what I have been told it is that the difference in body shape is really unattractive to the opposite shaped cory so they don't mate with each other. One of the local guys in my aquarium club is a real cory nut (he maintains 80 species and has bred dozens of them) and this is what he told me.
Andy, what do you base this on? Not arguing; I'm genuinely curious. I haven't seen many reports of hybrids on the web, so I'm guessing that you're reporting this based on what you've learned by word of mouth.
