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Blacknose Dace


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#21 FirstChAoS

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Posted 10 January 2016 - 09:40 PM

A few comments. Someone mentioned temperments. In my experience Western Blacknose Dace are more aggressive than Eastern. As for different face shapes. Rhinicthys seem to do that. One population of Blacknose Dace me and Mike found had a more sloped body and pointy face that looked almost Longnose like. 

 

The western Nooksack subspecies of Longnose dace has a more bulgy snout than the other varieties, etc.



#22 littlen

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Posted 11 January 2016 - 06:15 PM

Thanks for posting all the pictures. That was a very useful resource.
Nick L.

#23 gerald

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Posted 13 January 2016 - 10:34 AM

I've been fooled a few times by blacknose vs longnose looking at snout shape.  The smaller eyes and very small scales of longnose seem to be good indicators on dace with ambiguous snout shape.


Gerald Pottern
-----------------------
Hangin' on the Neuse
"Taxonomy is the diaper used to organize the mess of evolution into discrete packages" - M.Sandel


#24 mattknepley

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Posted 13 January 2016 - 03:33 PM

Just me or does the head shape of our supposed southern blacknose dace favor longnose dace a bit as well?

 
 I was thinking the same thing on a couple of those pictures.

I've been fooled a few times by blacknose vs longnose looking at snout shape.  The smaller eyes and very small scales of longnose seem to be good indicators on dace with ambiguous snout shape.


Thanks for the tip, Gerald!
Matt Knepley
"No thanks, a third of a gopher would merely arouse my appetite..."

#25 Josh Blaylock

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Posted 13 January 2016 - 09:58 PM

Just me or does the head shape of our supposed southern blacknose dace favor longnose dace a bit as well?

You should see the ones from the Cumberland River headwaters. Snout long enough that the KDFWR has incorrect id's on their site.

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#26 QuoVadis

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Posted 22 January 2016 - 06:14 PM

Does anyone else have trouble telling blacknose and longnose dace apart? I can't figure out which ones I have kept in my aquariums... I brought them home having identified them as longnose, but they look a lot like blacknose too, so I'm second guessing myself. Mine were pretty territorial with each other - never succeeded in keeping more than one in a tank. The sub-dominate one always found a way to jump out, even when it seemed impossible.



#27 Raikon316

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Posted 03 April 2016 - 07:42 AM

Interested



#28 JackieFisher

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Posted 16 October 2018 - 04:09 PM

Does anyone else have trouble telling blacknose and longnose dace apart? I can't figure out which ones I have kept in my aquariums... I brought them home having identified them as longnose, but they look a lot like blacknose too, so I'm second guessing myself. Mine were pretty territorial with each other - never succeeded in keeping more than one in a tank. The sub-dominate one always found a way to jump out, even when it seemed impossible.

 

me. I think a lot are hybrids, the different looks by location maybe hybrids with different % with longnose



#29 JackieFisher

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Posted 16 October 2018 - 04:10 PM

looks like longnose dace?

 

First native I ever kept in an aquarium as far as I remember and I still usually have a few in my stream tank today after about 20 years of keeping native fish. My local ones really color up nice when you have two or three males that compete with one another and spar in the tank. They get a darker body and bright red stripe when in the mood. Females get a light gold stripe and darker rest of body when in the mood too. They are very aggressive feeders and can get a little territorial with other fish in the tank but never seem to actually cause damage to anyone else. I too have had fish that will force their way into a nearly closed hand to get food. Makes them really easy to catch out of the tank if you want to...

 

Rhinichthys+obtusus+male5+by+BZ.jpg

l



#30 Matt DeLaVega

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Posted 17 October 2018 - 07:45 AM

Some populations of blacknose dace have longer noses than others..The fish above is one of those long nosed blacknose dace. This has been discussed a few times. I think someone theorized that fish from higher gradient streams tend to have longer noses.


The member formerly known as Skipjack


#31 gerald

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Posted 17 October 2018 - 07:55 PM

Look at the eye size and scale size differences too, in addition to snout length.  I've been fooled by using snout length alone.


Gerald Pottern
-----------------------
Hangin' on the Neuse
"Taxonomy is the diaper used to organize the mess of evolution into discrete packages" - M.Sandel


#32 tricolor

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Posted 04 November 2018 - 07:01 PM

Do all populations of OH blacknose the one whose male has only red stripe on the side but no red on mouth and belly?



#33 Matt DeLaVega

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Posted 04 November 2018 - 09:32 PM

Not sure if I understand the question fully. Blacknose dace are widespread in Ohio. One of the more common minnows. The populations I have seen have all been fairly similar. We also have southern redbelly dace (widespread), rosyside dace (south central) redside dace (eastern) and longnose dace (Flushing escarpment, and eastern lake Erie tribs). Hope that helps.


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#34 tricolor

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Posted 06 November 2018 - 03:08 PM

I mean does all OH blacknose dace has male whose breeding color is like smbass's pic: Rhinichthys+obtusus+male5+by+BZ.jpg

 

with red horizontal stripe from behind eye but not on cheek and lower part of body like this lower pic:36d17c_d977cc3b6542446799c78116cc78deec~



#35 Matt DeLaVega

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Posted 06 November 2018 - 03:57 PM

I haven't ever noticed them looking like the 2nd fish in Ohio.


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#36 tricolor

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Posted 20 November 2018 - 04:24 PM

Thanks.  Wondering what is the distribution of the blacknose dace with broad red stripe.



#37 Fleendar the Magnificent

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Posted 27 November 2018 - 07:17 PM

My experience with the WBND is so far, limited to one individual, but he's pretty aggressive towards all of the other fish other than the madtom and sunfish. He's also oddly colored as well but without any red coloration. Perhaps a female? This is a Licking county Ohio fish from a small tributary stream.

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