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Sorry, this isn't about an "odd" characin, but I couldn't think of a better place to ask this question: Does anybody know if penguin tetras are particularly bad about eating Cory eggs? Recently, almost every time I wake up to find eggs laid in my community tank, I discover that most of the eggs have been eaten before I wake up. The newest fish in the tank (for about 4 months now) are 3 penguin tetras, so I suspect they are the culprits. I also have several Apistogramma agassizii, one upside down cat, and 6-7 banjo cats. Everyone else in the tank are Corys. I've never caught any of these fish eating eggs, but they could be too.
Thanks, Eric

Marc van Arc wrote:I can hardly remember the time I did not keep characins.
So if I may adapt the title of this thread to suit my current status: no characins, that's odd.

It took me nearly a year to find out that I missed keeping fishes from the characin family.
To make up for that, I keep Tetragonopterus argenteus since last Thursday.

bekateen wrote:Sorry, this isn't about an "odd" characin, but I couldn't think of a better place to ask this question: Does anybody know if penguin tetras

Thayeria obliqua

are particularly bad about eating Cory eggs? Recently, almost every time I wake up to find eggs laid in my community tank, I discover that most of the eggs have been eaten before I wake up. The newest fish in the tank (for about 4 months now) are 3 penguin tetras, so I suspect they are the culprits. I also have several Apistogramma agassizii, one upside down cat, and 6-7 banjo cats. Everyone else in the tank are Corys. I've never caught any of these fish eating eggs, but they could be too.
Thanks, Eric

Very late to this one, but we found that some tetras are really extremely good at nipping Corydoras eggs off glass or decor. Looking at the jaws of Thayeria, I could easily imagine these doing the same.

Thanks coelacanth. That fits with my experience. Maybe I should get rid of these guys, or at least move them to another tank.

Cheers, Eric

What a great video with loads of characins!

Marc van Arc wrote:It took me nearly a year to find out that I missed keeping fishes from the characin family.
To make up for that, I keep Tetragonopterus argenteus since last Thursday.

It took me two months to discover they weren't T. argenteus, but Ctenobrycon spilurus. Mind you, they were very small.
Anyway, I don't keep them anymore.

I'm going to resurrect this thread because I have finally managed to get hold of some more

They were rather small (half an inch) but only £2.99 each so I bought a group of 14 yesterday. They're feeding hungrily now, which is great. I'm going to grow them out a bit until they're sexable, and then put them in smaller groups and have a better go at breeding them.

I've still got one remaining from my previous batch but he's big and looking very elderly (>4 years) so I will probably keep him separate from the youngsters. Last time round I did see some signs of courting and possibly guarding eggs, but never any fry. I've got more experience and better foods and water now, so think it's worth trying again.

Cheers,
Paul

Going to resurrect this old thread with a quick video of my Rhoadsia altipinna

An oldie but a goodie - those are cool fish.

Jools

They look great!