Re: Heterandria formosa - is it a Killi?

["Tyrone Genade" <Tgenade at sun_ac.za>]

On 31 Jul 2002, at 12:29, Bill Wallace wrote:

> Is Heterandria formosa a killifish?  From what I can gather, it is a
> livebearer, and is in the same genus as Guppies (which aren't
> Killies), 

H. formosa is as much a killifish as a lamp-eye and it is not in the 
same genus as the guppy butthe same family, as well as the suborder 
Poeciliidae.

> however, it is also known as the Least Killi, and is
> certainly discussed in this list.  It is in the order
> Cyprinodontiformes, which I thought was killies, but perhaps there are
> additional qualifications to what is a killifish.

Killies are in the suborders: Aplocheilidae, Profundulidae, 
Fundulidae and Cyprinodontidae etc... The lampeyes are in the family 
Aplocheilichthyinae which falls under the suborder Poeciliidae.

Feeling confused?
Irrelevant. Changing the relationships have not changed the fish. A 
lamp-eye is as much as killi to me today as it was last year. Are 
livebearers killifish? Of course not! They have their own society.:-)

See 
http://www.calacademy.org/research/ichthyology/catalog/classif.html 
for all the info you will need about classification... (You won't 
have to pay this time Scott.)
Tyrone Genade
tgenade at sun_ac.za
http://www.tyronegenade.0catch.com

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