Search found 387 matches

by Rico Morgenstern
Sun Feb 08, 2015 3:58 pm
Forum: Taxonomy
Topic: Hypsophrys unimaculatus
Replies: 16
Views: 3839

Re: Hypsophrys unimaculatus

The valid name for this species is Hypsophrys nicaraguensis . Hypsophrys unimaculatus is a nomen oblitum , a senior synonym invalidated by reversal of precedence according to the criteria defined in Article 23.9.1: http://www.nhm.ac.uk/hosted-sites/iczn/code/index.jsp?article=23&nfv=true#9 It is som...
by Rico Morgenstern
Sat Feb 07, 2015 7:32 am
Forum: Taxonomy
Topic: Phylogenetic relationships of Middle American cichlids
Replies: 14
Views: 3989

Re: Phylogenetic relationships of Middle American cichlids

I agree Willem, phylogeny and taxonomy are anyway interwoven since the emerge (and success) of phylogenetic systematics. A 'natural' classification has been sought since the discovery that organisms are naturally interrelated, even if the methods and concepts to acheive that goal have changed with t...
by Rico Morgenstern
Thu Feb 05, 2015 10:26 am
Forum: South American Cichlids
Topic: ID help of an Andinoacara from Rio Meta (yellow)
Replies: 6
Views: 1805

Re: ID help of an Andinoacara from Rio Meta (yellow)

The 'Blue Acaras' are wonderful aquarium fish, but this group is quite frustrating with regard to species delimitation and identification. Many names (both scientific and provisional ones) are inconsistently used in the literature, and even reliable locality data are not always helpful, because the ...
by Rico Morgenstern
Sun Jan 04, 2015 12:52 pm
Forum: Central American Cichlids
Topic: Thorichthys sp. rio nuevoano
Replies: 3
Views: 1254

Re: Thorichthys sp. rio nuevoano

Nice :lol: :wink:

Happy New Year to you and to everyone else here as well!
by Rico Morgenstern
Sat Dec 06, 2014 3:19 am
Forum: Taxonomy
Topic: Taxonomic Status of Amatitlania coatepeque
Replies: 7
Views: 2860

Re: Taxonomic Status of Amatitlania coatepeque

This is a sound work, very well exemplary for proposing a new synonymy. I think the conspecifity of A. coatepeque and A. nigrofasciata is clearly demonstrated. I guess that many here would also have accepted a simple statement (at least one by some 'famous' ichthyologist) of the synonymy, but such w...
by Rico Morgenstern
Sat Dec 06, 2014 1:48 am
Forum: Taxonomy
Topic: Melanochromis / Pseudotropheus
Replies: 12
Views: 4129

Re: Melanochromis / Pseudotropheus

A more recent overview, with an updated list of species and an identification key is found here:

http://www.mapress.com/zootaxa/2012/f/zt03258p027.pdf
by Rico Morgenstern
Thu Dec 04, 2014 3:36 am
Forum: Central American Cichlids
Topic: Cryptoheros septemfasciatus
Replies: 2
Views: 1214

Re: Cryptoheros septemfasciatus

A. centrarchus is present in Costa Rica as well, so the distribution of both species broadly overlaps. However, syntopic occurences (unless "accidental") are unlikely because C. septemfasciatus prefers flowing waters usually found at higher elevations, whereas A. centrarchus typically occurs in the...
by Rico Morgenstern
Tue Nov 04, 2014 3:46 pm
Forum: Taxonomy
Topic: godmanni of godmani?
Replies: 2
Views: 1513

Re: godmanni of godmani?

Godman has been latinized to 'Godmannus' (because of the short vocal 'a', it is the same as in Roman names such as Lucullus). Therefore, godmanni (with double n and a single i) is correct for Heros godmanni Günther, 1862, Pimelodus godmanni Günther, 1864 and also for Rivulus godmanni Regan, 1907. Re...
by Rico Morgenstern
Mon Oct 27, 2014 10:48 am
Forum: Taxonomy
Topic: P. or N. toae
Replies: 23
Views: 5108

Re: P. or N. toae

Not quite correct Philippe! Although it sounds logical at the first glance, "page priority" is a myth. However, the principle of priority says that (usually) the oldest available name is the valid one. Of two names published in the same work nobody can say which one is older since this is determined...
by Rico Morgenstern
Sun Oct 26, 2014 3:21 am
Forum: Taxonomy
Topic: P. or N. toae
Replies: 23
Views: 5108

Re: P. or N. toae

First, let me apologize for some overly emotional comments that I've made Accepted, ditto! The use of the Code enables a zoologist to determine the valid name for a taxon to which an animal belongs at any rank in the hierarchy species, genus, and family (including subspecies, subgenus, and ranks of...
by Rico Morgenstern
Tue Oct 21, 2014 10:03 am
Forum: South American Cichlids
Topic: green terror biotope
Replies: 4
Views: 1786

Re: green terror biotope

A very interesting website about the freshwater fishes of western Ecuador is here: http://condor.depaul.edu/waguirre/fishwestec/index.html The list is not entirely up to date (e.g. Andinoacara blombergi is not yet included, but part of the information given for A. rivulatus refers to this species), ...
by Rico Morgenstern
Sat Oct 18, 2014 1:57 am
Forum: Other African Cichlids
Topic: YouTube of Lake Turkana Cichlids!
Replies: 2
Views: 2265

Re: YouTube of Lake Turkana Cichlids!

Wonderful, thank you! The Hemichromis of Lake Turkana is was considered conspecific with H. letourneuxi in the last revision of the genus, but lately the name H. exul as been somewhat en passant revalidated for it . The isolated occurence and remarkable coloration may support it's separate status, b...
by Rico Morgenstern
Fri Oct 17, 2014 11:19 am
Forum: Taxonomy
Topic: P. or N. toae
Replies: 23
Views: 5108

Re: P. or N. toae

The criteria of publication and availability fixed in the Code refer to newly proposed names, not to subsequent changes in the status of the taxa denoted by those names! And all the criteria were fullfilled for both Neolamprologus and Paleolamprologus in the original description. Willem's analysis o...
by Rico Morgenstern
Tue Oct 14, 2014 3:17 pm
Forum: Taxonomy
Topic: P. or N. toae
Replies: 23
Views: 5108

Re: P. or N. toae

The 2 names are valid, without no doubt I agree, see here for full discussion: http://www.cichlidae.com/forum/viewtopic.php?f=17&t=17644 In Maréchal & Poll 1991 both Variabilichromis and Paleolamprologus were synonymized back into Neolamprologus . Some people just never accepted Maréchal & Poll in ...
by Rico Morgenstern
Tue Oct 14, 2014 2:38 pm
Forum: Taxonomy
Topic: Two new Parananochromis species
Replies: 2
Views: 1548

Re: Two new Parananochromis species

This is an interesting work. Parananochromis elobatus (formerly called P. sp. 'Sanaga' although its presence in the Sanaga drainage is doubtful; see p. 53 of the present paper) is certainly a valid species well differentiated from the most similar species, P. brevirostris . At the first glance, this...
by Rico Morgenstern
Mon Sep 22, 2014 11:59 am
Forum: Taxonomy
Topic: Two new Parananochromis species
Replies: 2
Views: 1548

Two new Parananochromis species

Lamboj, A. (2014): Two new species of Parananochromis from Cameroon, Central Africa (Teleostei: Cichlidae)

Ichthyological Exploration of Freshwaters v. 25 (no. 1): 49-57

Abstract: http://www.pfeil-verlag.de/04biol/pdf/ief25_1_04.pdf
by Rico Morgenstern
Mon Aug 11, 2014 2:31 pm
Forum: Taxonomy
Topic: Species taxa described in hobbyist journals are under threat
Replies: 6
Views: 2326

Re: Species taxa described in hobbyist journals are under th

(1) New names published in aquaristic press were not accepted by ichthyologist <1955 Can you give an example? Remember, we are talking here about names considered " not published " in the sense of the Code (at least this is my interpretation of Schleipp's reasoning). Many names, mostly those establ...
by Rico Morgenstern
Sat Aug 02, 2014 3:32 am
Forum: Central American Cichlids
Topic: Cenote Cristalino, Yucatan Penisula, Mexico.
Replies: 9
Views: 2355

Re: Cenote Cristalino, Yucatan Penisula, Mexico.

I wish they were available to keep in the hobby, such a beautiful fish! Yes, I wish that as well. From time to time they are available, but they have been largely replaced by all those ugly hybrids and line-bred forms which look like plastic rather than living creatures. Genuine pet shops have thei...
by Rico Morgenstern
Sat Aug 02, 2014 3:24 am
Forum: Taxonomy
Topic: Pseudetroplus a valid genus
Replies: 5
Views: 2140

Re: Pseudetroplus a valid genus

I agree. It is just a thought, but in my view the criteria for recognizing genera should be (in that order): (1) phylogenetic integrity (which means monophyly according to the current guidelines of phylogenetic taxonomy, although there is certainly room for discussion if paraphyletic taxa may not be...
by Rico Morgenstern
Sat Aug 02, 2014 2:53 am
Forum: Taxonomy
Topic: Species taxa described in hobbyist journals are under threat
Replies: 6
Views: 2326

Re: Species taxa described in hobbyist journals are under th

Having followed the discussion about the doings of this guy elsewhere, it seems to me that the debates we had about certain taxa (e.g. Mik(c)rogeophagus , Symphysodon tarzoo , etc.) are negligible in comparision. While I fully sympathize with the herpetologists and understand that they spare no effo...

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