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A species or just a location morph

Fish talk not related to a specific species or type of fish.

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Post Wed Jan 03, 2018 4:13 pm
Passionfish Level 20 Member
Level 20 Member

Posts: 12051
Location: apple valley, mn
In 1989, S. Kullander and Nijssen published book/paper describing fish from Suriname. In the book, the authors stated Cichla ocellarisis found in Lake Brokopondo. In 2006, Kullander and Ferreira reviewed the genus Cichla and described 9 additional species which were added to the 6 existing species. The Brokopondo morph of C. ocellaris was not raised to species level in 2006 revision. There have been no additional species added to Cichla since 2006 by any systemic ichthyologist.

Ron Coleman is an ichthyologist has stated that morphology is highly variable within a species.

Juan Miguel Artigas Azas did not take his degree in ichthyology but has become an ichthyologist by his intense devotion and study of Mexican fishes with an emphasis on cichlids. In the latest issue of Cichlid News January 2018, Juan authored a paper providing sound reasons for removing Rocio gemmata from species staus and placing the name as a junior synonym of Rocio octofasciata. Juan believes fish display variability that is both natural (no two fish are identical) and forced (geography and environment).
Juan comments on each element of diagnosis for R. gemmata and explains how the element is invalid based on variability. He suggests humans including ichthyologists and untrained fish keepers seek to find minutiae in order to create imaginary species.

There is psychology reason for this human behavior of seeking differences between that which is not different. I will not discuss this psychology. If interested in why humans tend to find differences that are not there, explore that area on your own.
Like a complete unknown

Post Thu Jan 04, 2018 7:32 pm
Passionfish Level 20 Member
Level 20 Member

Posts: 12051
Location: apple valley, mn
The original post has been edited from C. orinocinsis (error) into C. ocellaris (correct).
Like a complete unknown

Post Thu Jan 04, 2018 7:32 pm
Passionfish Level 20 Member
Level 20 Member

Posts: 12051
Location: apple valley, mn
The original post has been edited from C. orinocinsis (error) into C. ocellaris (correct).
Like a complete unknown


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