What exactly is a rummynose?
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What exactly is a rummynose?

This is a discussion on What exactly is a rummynose? within the Characins forums, part of the Freshwater and Tropical Fish category; --> Is it is a rasbora or a tetra? I've seen it classified as both....

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What exactly is a rummynose?
Old 03-11-2014, 09:22 AM   #1
 
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What exactly is a rummynose?

Is it is a rasbora or a tetra? I've seen it classified as both.
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Old 03-11-2014, 10:44 AM   #2
 
It's commonly referred to as a tetra but these are only common names that mean very little. If you want to see what fish are closely related go by it's scientific name,Hemmigramus rhodostomus,and look for other fish of the Hemmigrammus genus
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Old 03-11-2014, 10:52 AM   #3
 
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Way back when, I saw them listed as both. That prompted me to Google it. The first 2 entries were Tetra & Rasbora. If I remember correctly. Hemigramus is the genus name for tetras. What makes a rasbora a rasbora?
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Old 03-11-2014, 11:10 AM   #4
 
Hemmigrammus is only one genus of fish that is commonly referred to as a tetra. Neons are in a different genus for example but are still called tetras.Black tetras are in a third genus and it goes on and on. There really aren't any rules for common names which can often lead to confusion.
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Old 03-11-2014, 12:12 PM   #5
 
Classifications are made by certain characteristics which sometimes fall on the borderline of 2 or more species.... it doesnt necessarily reflect behavior of the fish... in other words, not all tetras are alike even though they share common characteristics.
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Old 03-11-2014, 12:27 PM   #6
 
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What exactly is a rummynose?

Fin structure is one of the primary means of identifying the family to which a fish belongs.

For example, tetras have an adipose fin between the dorsal and caudal fins, while cypranids do not. So whether it is a tetra or a rasbora is determined by the adipose fin, or lack thereof.

It's a tetra.
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Last edited by jaysee; 03-11-2014 at 12:30 PM..
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Old 03-11-2014, 12:37 PM   #7
 
Rasboras aren't cypranids ,they are characins.
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Old 03-11-2014, 12:39 PM   #8
 
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Quote:
Originally Posted by jpepe1 View Post
Rasboras aren't cypranids ,they are characins.

That is incorrect.
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Old 03-11-2014, 12:45 PM   #9
 
I'm only wrong about five times a day so I'm going to double check
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Old 03-11-2014, 12:47 PM   #10
 
Just double checked .They are characins
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