Etymology Hyphessobrycon: from the Ancient Greek υπελάσσων (hyphesson), meaning ‘of lesser stature’, and used as a prefix in this case, plus the generic name Brycon. balbus: from the Latin balbus, meaning ‘stuttering’, in reference to the incomplete lateral line in this species which is described as ‘stuttering’ in its description. Classification Order: Characiformes Family: Characidae Distribution The species under consideration is […]
Wild specimens of this species look similar to those of P. latipinna (Sailfin Molly). However, Yucatan Molly is larger, and has a fuller sail-like dorsal fin, with a greater number of fin rays (18 or 19 as opposed to 14). Ease of hybridization between this species, P. latipinna, and/or P. sphenops (Sphenops Molly) has resulted in a spectacular range of aquarium varieties.
This highly variable, widely distributed species has given rise to a vast array of cultivated varieties (many through hybridization), the best known of which is the Black. Molly. According to some authorities, it is the closely related—and very similar — P. mexicana (Atlantic Molly) that is the true ancestor of the aquarium strains. The confusion seems to have arisen because both species were once regarded as one and the same. The Liberty Molly, a form of Sphenops Molly, possesses a short but very attractively colored and patterned dorsal fin. Both P. mexicana and Sphenops Molly hybridize with P. latipinna (Sailfin Molly) and P. velifera (Yucatan Molly).
In the hobby since the early 1900s, the Guppy is one of the best known and most popular aquarium fishes of all time. It is an adaptable, hardy fish whose inherent genetic variability has been exploited over the years to produce a bewildering array of fin and color permutations. As a result, the original short-finned wild type of the species is hardly ever seen, except in the aquaria of specialist livebearer enthusiasts. Endler’s Livebearer is a particularly beautiful wild form.
Despite its common name, not all wild males of this species develop the full sail-like dorsal fin. The pure wild form of the species is hardly ever seen within the hobby. Instead, cultivated color varieties or, more often, fertile hybrids between sailfins and two of their closest relatives — Poecilia sphenops (Sphenops Molly) and P. velifera (Yucatan Molly)—are seen.
This is another extremely attractive Limia species that hybridizes easily with its closest relatives. It is also highly variable, with some specimens having very little spotting, whereas others—particularly some of the aquarium-bred strains—are richly spotted with yellow and black.
The humped back of this Limia is particularly evident in fully mature males, a group of which create an impressive sight in any aquarium. Hybridization with closely related species is not uncommon. Two very similar species: L. grossidens (Largetooth Limia) and L. miragoanensis (Miragoane Limia)—both also from Lake Miragoane—are thought by some authors to be synonymous with Humpbacked Limia.
In peak condition, this is a superb little fish for a community aquarium. Males have a bluish sheen and yellow coloration in the caudal and dorsal fins, and females have a large black belly patch. Males in particular are always on the move, displaying to each other and attempting to mate with females of their own species and with those of closely related ones. If they succeed in mating with related species, fertile hybrids may be produced.
This section covers a group of four families, in which many of the species produce live young. The family Poeciliidae contains the most popular aquarium fish that produce live young. Many beginners start with the guppy (Poecilia reticulata), progressing to swordtails such as Xiphophorus helleri. One major reason for the popularity of the group – […]
The coloration of Pacific Mexican Mollies in the wild is variable, ranging from shades of blue to yellowish and silvery tones. Darker coloration is seen in some individuals, notably in the race known as Limantour’s Molly (P. m. limantouri).