Genus, Cichlasoma Swainson, – American cichlids. Species, Cichlasoma istlanum (Jordan and Snyder, ) – mojarra del Balsas, redside cichlid. Cichlasoma istlanum is a species of ray-finned fishes with 5 observations. I just picked up 4 Red Istlanum last week. 3 of them from COA and 1 male from Rapps. The ones from COA are Gmfishnuts original strain and.

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At her return, they flank each other like a sign of taking the turn and the male then disappear from the area.

Of course these fish need large tanks and an equipment that fits their needs, but if these things are given any aquarist will for sure enjoy keeping them. You must log in or sign up to post here. Fry can be watched grazing xichlasoma any surface, but with predilection for rocks where they seem to find attached algae and small invertebrates.

Luck and parents care will tell at this point the future of the istlanuk fish. This splendid species is endemic in the Rio Balsas system in Mexico. Freshwater Fishes of Mexico.

So, it seems ‘Cichlasoma’ Istlanum will have to wait for a genus of his own when more study is carried on about the former Middle American representatives of the genus Cichlasoma.

Sent from my iPhone using MonsterAquariaNetwork app. The eggs hatch after two days under aquarium conditions and small wrigglers are placed in the bottom of the cave where they remain until they become idtlanum swimming after five days in aquarium. Here the fish also represents the only naturally occurring species iztlanum cichlid. Fins are translucent showing blue iridescent spots and small red lines that become dots in the first third of the caudal fin. In normal coloration the fish shows several black blotches along the middle part of the flanks, those more conspicuous being the first, located at the base of the head, one in the middle of the body which is the only one seen in juvenilesand one at the base of the caudal fin, those first and last ocelated with small scales containing blue spots in the middle.

In breeding individuals the red of the lower half of the flanks becomes very intense as well as the dark in the upper part, becoming in males velvety black up to about five black blotches that form a line in the upper part of the flanks and are just clearly visible in dominant individuals.

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Human uses

Snorkeling in the few rivers where this was possible also was unproductive. Rio Coahuayana being almost destroyed by the untreated wastes of cichlaslma huge paper factory north of the city of Colima. Nevertheless, the istlahum of natural geographical accidents like waterfalls in the lower rivers leaves a very large uninterrupted range for Istlanum, much larger than the majority of the ranges known for Central American cichlids.

Pollution plays its role, and rivers, especially the lower Armeria and Coahuayana systems, are stroked hard by human thoughtlessness. Hopefully, through this site and discussion forums we can encourage the next generation of Monster Fish Keepers to have the same passion and love we have for the hobby and our Monster Fish. Every scale on the flanks show a blue spot larger than those in the ventral area.

Females are substituted by the males every once in a while, short time that the female uses to disappear from the spawning area in search of food. It has been suggested then that Istlanum according to it’s feeding technics could be considered part of the genus Nandopsis Gill Konings,but recently Dr. The range of ‘Cichlasoma’ istlanum is not restricted to the Balsas river system, but it also extends to smaller systems west to Sierra Coloma at N.

I had a few hundred from wrigglers in a 40 long by themselves and they tore each other up. Here are a few pics of the male from Rapps.

The large cichlids from Central America are a bit out of fashion currently. It’s not easy for most people or other “regular” fish keepers to understand why we cochlasoma this type of collection and spare no expense on this fascinating hobby. Our specimens are German bred. The species is sexually active already at a length of cm. At this time the female stays closely above the cave just peaking her head to take a cichlsoma look at her babies every couple of minutes, preventing with her mouth that any dirt may cover them; after that she returns to her position, the male at this time surrounds apparently careless the nest in circles about a meter in radio.

There are also many introduced species, African cichlid representatives like Tilapia rendalli and Oreochromis aureus are found in the whole range, introduced by the Mexican government as a dietary supplement for istlaum in the region.

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Ex-Cichlasoma Istlanum

I have observed lucky parents with herds of more than one thousand 2 cm fry, strolling proudly with their babies in the shallows of the river. Photo by Juan Miguel Artigas Azas.

Breeding activity takes place during the dry season in the slower flowing parts of the rivers near the shores, normally on muddy substrates where the pairs already formed look for a rock where they dig a small cave that fit them at the base of it. Rio Ixtla cichlid, Red bellied cichlid Text: Jan 31, Messages: I have done extensive collecting with casting nets in rivers in the Colima state, but wasn’t able to catch a single specimen.

Males can grow up to 30 cm in length, females always stay smaller. Library Bibliography Magazines Reviews. Wheteher this prevailed in the past I wouldn’t know, since it is a fact that land deforestation has contributed its deal to this situation. Also central America is represented in upper Rio Amacuzac by the recent introduction by hobbyists of Archocentrus nigrofasciatus that has bloomed, becoming a possible threat to ‘Cichlasoma’ istlanum populations.

Dec 17, Messages: I have observed that other cichlids at the sight of the guarding male just change subtly their route to avoid the nest vicinity, any careless fish that comes too close is then chased away by the angry male.

Cichlasoma istlanum – Aquarium Glaser GmbH

The course of the Balsas mostly consist of rivers of moderate fast to very fast water flows, running istlanym terrains that are rocky but also muddy in bottom composition. We have to add that ‘Cichlasoma’ istlanum is the only natural cichlid in the Balsas, and so it has no competition for habitat.

During the rainy season Balsas rivers have a strong reddish brown color with no more visibility than perhaps 1 mm, indicating the high contents of fine clay being washed away. We now have this beautiful fish in stock. Trade section The master list of cichlid offers ordered by area and species name. Cichlids coming from the western part of the range are distinguished from eastern counterparts by the stronger green coloration, mainly in the head area.