Dimorphic means that the male and the female of the stated species look very different, either by size or colour or both. Sometimes, especially in the case of some African Cichlids, the two sexes can look like entirely different species.
This is a sexually dimorphic species , males are far more vivid than females who are a silvery iridescent hue. Males are highly variable in colouration from yellows, oranges, and reds through to blacks and greys with green iridescence in areas.
Some species are sexually dimorphic, but most are not. In those species that are (especially the bristle-nosed (ancistrus) kind), the males have more "tentacles" on their upper lip. The females have fewer (sometimes none) of these protuberances.
pulcher is sexually dimorphic. Males have a pointed pelvic fin, while the females' pelvic fin appears more rounded. In addition, males are larger, lack the gold sheen to the dorsal fin and have a more elongated, spade-shaped caudal fin [2][3].
Most fish can be classified as sexually dimorphic or sexually isomorphic.
Breeding: Most species of Killifish are sexually dimorphic. Males are much more colorful than females and will have larger dorsal and anal fins.
The sailfin molly is sexually dimorphic; males have a longer, higher sail-like dorsal fin that lies close to the fish and that can be extended like a sail. Females have a smaller rounded dorsal fin (Boschung and Mayden 2004).
Fish that are temporarily dimorphic or dichromic show color differences in color and/or form during the breeding season or differences in color just during courtship and/or spawning.
They grow to around 10 cm or so, and the males & females are only slightly sexually dimorphic. The males have longer 'streamers' on their fins & tails. In females these same 'streamers' will be noticeably shorter.
Agassizii are typically dimorphic with the male being larger and more colorful. Females are a dull color that can range from gray to brown to dusky yellow until they put on their brood colors.
It is also one of the few that is dimorphic. The males are darker having a lot of black marking on the head and front half of their bodies. They also have a row of bristles along their "cheeks" at the bottom edge of the gill covers.
None of the FW or BW members of the genus Tetraodon are sexually dimorphic. That means that you cannot distinguish males and females visually by external clues or configuration.
Being Killifish, they are sexually dimorphic, the males have all the color while the females are drab (brown). They have a lifespan of 3-4 years, the same as many types of tetras.
They are sexually dimorphic (which means you can tell male from female). Males have longer pelvic fins, a pointed caudal fin and longer lips. Females have a rounded abdomen and shorter fins.
They have the distinction among angelfish of being sexually dimorphic. Both male and female are a silvery-gray with horizontal black stripes from eye to caudal fin.
The fish is very dimorphic with the male being the more colorful sex. The tail is also different between the two sexes; the male's is spearpoint shaped while the female's is rounded. It likes warm, soft and acidic water.
moved some species to Hemiloricaria based on some morphological and sexual dimorphic characteristics. Still with me? In 2003 Ferraris published and recognized only Rineloricaria as a valid genus containing 45 nominal species.
 See also: Fish, Aquarium, Water, Spawn, Species
  
|
RSS
