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what is a killifish?
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don clark
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Joined: 14 Sep 2011
Location: florida

PostPosted: 2011.09.15(Thu)20:38    Post subject: what is a killifish? Reply with quote

why are live bearing least killifish named killifish, and are golden topminnows, Fundulus chrysotus actually considered a killifish? Confused
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diademhill
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Joined: 18 Apr 2007

PostPosted: 2011.09.16(Fri)6:41    Post subject: Reply with quote

For once wikipedia has a good entry on Killifish
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don clark
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Joined: 14 Sep 2011
Location: florida

PostPosted: 2011.09.16(Fri)7:55    Post subject: Reply with quote

thanks, I guess livebearing lesser killifish isnt but topminnows are, english is confusing, but livebearers and killifish share the same habitat.
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UncleWillie
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Joined: 26 Nov 2007
Location: Georgia, USA

PostPosted: 2011.09.16(Fri)8:10    Post subject: Reply with quote

Don't read too much into common names... When a species is first encountered they are given a common name before there can be a formal description. Least killifish is no exception its tiny size and habitat probably made someone automatically think it is a killifish. That's why many people call them 'dwarf livebearers' now in the aquarium trade.

Wikipedia actually does have a decent killifish (as a whole) page. That's refreshing.

And yes, the Fundulus sp. (topminnows) are indeed considered killifish. Although most break the "norm" where people think killies live 1-2 years and never grow larger than 2-3''. Many of the Fundulus sp. reach 6'' and can live 5+ years. The pupfishes are also considered killies. Think about the sheepshead minnow, Cyprinodon variegatus. This is not a minnow (Cyprinid) at all. Don't read too much into common names.
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