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I've kept and breed these about 10-12 years ago and their a stunning fish.
I personally would not keep them with anything else as i would not want the to be disturbed, their a shy fish, wanting to sit in weed and hunt small fish all day.
The female is a big fish getting to 8" is easy and if their well feed they will get to 12" and their teeth are amazing!!!!
Håvard Støre Andresen
www.britishlivebearerassociation.co.uk
Their easy to sex as the next picture here will show, just like guppies
Håvard Støre Andresen
www.britishlivebearerassociation.co.uk
She will if not feed easily eat the male as well, so breeding is not always easy with these fish, how ever when a females gives birth she will drop 50+ fry and I've had over 100 at times.
How ever raising the fry are more difficult the feeding the parents they will only feed on live foods, so u need a good supply of small live foods like baby guppies, blood worm at first, but the do grow fast, I've gotten fish to mature at 3 months old and if their fully grown by 5-6 months, only if well feed.
I only know of 2 pair of Pike in the UK one in Southampton and another in Bristol. When their are fry you will be able to get them easily, but getting adult fish you'll be looking at an expensive fish if it UK breed, some importers bring them in, but they don't feed them to save money and £15-20 a fish is the average cost.
Hopefully their may be other peeps here with them, if there is I'll be interested as well to see them.