Nowadays, after hundreds of years of draining wetlands and lakes to allow for the enormous expansion of Mexico City, Girardinichthys viviparus can just be found in the remnants of the former huge lakes. It has persisted only in the three artificial lakes in the Parque de Chapultepec inside Mexico City, with a stronghold in the Lago Mayor, with small numbers in the lakes Zumpango and Xochimilco, and in moderate numbers near the airport at Alameda Oriente, which belongs to the former Lake of Texcoco. In Miranda et al. This stock is introduced and the species not native to this lake.

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Written by Rick Borstein. Males of this species have dramatically large dorsal and anal fins which make this fish desirable. Males have an underlying golden base color and dark edges to their fins, hence the common name of "Darkedged Splitfins". Females are drab by comparison. They have a somewhat washed out golden base color and few if any markings. Distribution This fish is found in quiet, cool and slow moving waters and ditches in the Michoacan and Morelos. Watersheds where this fish are found are typically very shallow and contain many aquatic plants.

Care Girardinichthys multiradiatus "Maravatio, Mexico" is not hard to keep provided the aquarist provides clean, cool, neutral to hard water. Temperatures above 72F are detrimental to the health of this fish. Kept at tropical temperatures, it will become listless, stop breeding and may expire. So, why does this fish need to be kept cool? One location where this fish is found Lagunas de Zempoala is at M altitude.

Average water temperatures there are F! I believe this fish evolved to handle cool temperatures. I performed weekly water changes replacing the tank water with new water that was no more than 72F. My guess is that it is omnivorous in the wild, pecking and algae and eating any small aquatic fauna it may encounter. Steve Liszt had bred the fish and was offering both the adults and the fry for sale. I took the fish home and placed them in a gallon tank furnished with a sand substrate, java moss and small sponge filter.

I also used some floating plastic plant mats. No heater was used on the tank and water temperatures ranged from around 67F to 72F. The fish grew quickly and by the time the fish were 1. Males give very mild chase to other males when sexually mature. Overall, this is a very peaceful fish. Generally speaking, the highly sexually dimorphic goodeid species exhibit more advanced and dramatic mating displays. Males will flash continuously to attract females, making a showy display.

When the fish reached 1. After a gestation of about weeks, the females drop four to six, nearly one-half inch long babies. The babies hid in the floating plastic plants for a week or two before joining their parents in the tank. The parents ignore the babies in the tank, so fry survivability is good. The babies are able to immediately eat finely crushed flake food, but I also feed freshly hatched baby brine shrimp the first few days. Conclusion Girardinichthys multiradiatus "Maravatio, Mexico" is a beautiful goodeid that is fun to keep.


Human uses

Meek with collection date March 17th, For explanation: Meek refered to the fact, that the fish he used for description in came originally from this Rose collection. Charles Tate Regan mentioned four specimens he got to describe, probably from the material Meek had at hand. The drawings he published show individuals of both sexes.


Girardinichtys multiradiatus "Maravatio, Mexico"


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