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Three new Brazilian killifish species

By Leonard Ho - Posted Jan 23, 2017 09:00 AM
Researchers have described three new Melanorivulus sp. killifish from the savannas of central Brazilian high plateaus. Meet Melanorivulus ignescens, M. flavipinnis, and M. regularis.
Three new Brazilian killifish species

Melanorivulus flavipinnis

These new killifish species are part of the Melanorivulus dapazi group.  They are similarly tiny (~28mm / 1.1" standard length) and have the same body form and common pigmentation.  But they are visibly different.  Their latin names are easy to remember because they are based on these differences.  M. ignescens has more red in its fins ("igenscens" means "inflamed")  while M. flavipinnis has more yellow in its fins ("flavipinnis" means "yellow fins").  M. regularis has regularly spaced banding on its caudal (tail) fin.

regularis.jpg

Melanorivulus regularis

ignescens.jpg

Melanorivulus ignescens

Author: Leonard Ho
Location: Southern California

I'm a passionate aquarist of over 30 years, a coral reef lover, and the blog editor for Advanced Aquarist. While aquarium gadgets interest me, it's really livestock (especially fish), artistry of aquariums, and "method behind the madness" processes that captivate my attention.

Website: http://www.advancedaquarist.com.

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