Copei tetras

GlennO · Aug 21, 2026

Hi is anyone keeping these? I picked some up the other day. I had never seen them before. Size info on the web is inconsistent but they are already as big as mature rummynose so perhaps they get bigger. Any tips on them appreciated.

bgarthe · Aug 21, 2026

Never seen them, but they look gorgeous.

chromedome52 · Aug 22, 2026

Had a group of these many years ago, they stay just under 3 inches. No obvious sexual characteristics, but I believe the females get a little heavier in the abdomen. I was unable to induce spawning, passed them to a more capable breeder of Tetras, but he also had no luck.

A little bit nippy supposedly, but like a lot of schooling fish, a group tends to keep it amongst themselves.

GlennO · Aug 23, 2026

Had a group of these many years ago, they stay just under 3 inches. No obvious sexual characteristics, but I believe the females get a little heavier in the abdomen. I was unable to induce spawning, passed them to a more capable breeder of Tetras, but he also had no luck.

A little bit nippy supposedly, but like a lot of schooling fish, a group tends to keep it amongst themselves.

Thanks for that. They do spend a lot of time chasing each other. I was only able to get 6 of them. If I can find another source I'll get a few more.

Copei tetras

GlennO

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bgarthe

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chromedome52

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GlennO

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