Re: NANFA-- catch F. olivaceous vs. notatus

Bruce Stallsmith (fundulus_at_hotmail.com)
Mon, 30 Apr 2001 11:06:14 -0400

<x-flowed>
>From: "William Allen jr." <billandbonnie_at_peoplepc.com>
>Reply-To: nanfa_at_aquaria.net
>To: <nanfa_at_aquaria.net>
>Subject: NANFA-- catch F. olivaceous vs. notatus
>Date: Mon, 30 Apr 2001 00:46:12 -0500
>
>Please, someone, tell me how to tell these two fish (Fundulus notatus and
>F. olivaceus) apart
>
>Thanx,
>
>Bill
The best way to tell olivaceus from notatus is simply that olivaceus fishes
have distinct black spots dorsally above the mid-body black stripe, while
notatus individuals don't. Other than that, the differences are subtle.
Olivaceus can get bigger, up to 97 mm vs. 74 mm for notatus; olivaceus
prefer faster flowing, clearer streams; and there's reason to believe that
notatus are more aggressive feeders and can displace olivaceus. In general
you'll find one or the other species in a given area. Stressed olivaceus can
also lose much of their spotting which will confuse the pants off of people
trying to figure out which is which.

--Bruce Stallsmith
Huntsville, AL

_________________________________________________________________
Get your FREE download of MSN Explorer at http://explorer.msn.com

/-----------------------------------------------------------------------------
/"Unless stated otherwise, comments made on this list do not necessarily
/ reflect the beliefs or goals of the North American Native Fishes
/ Association"
/ This is the discussion list of the North American Native Fishes Association
/ nanfa_at_aquaria.net. To subscribe, unsubscribe, or get help, send the word
/ subscribe, unsubscribe, or help in the body (not subject) of an email to
/ nanfa-request_at_aquaria.net. For a digest version, send the command to
/ nanfa-digest-request_at_aquaria.net instead.
/ For more information about NANFA, visit our web page, http://www.nanfa.org
</x-flowed>