The presence of these scales is actually why some of these fish are referred to as ganoid fishes. One fascinating thing to note is that the ganoid scales have varying layers in their composition. In dinosaur eels, for example, these scales are composed of three layers. On the other hand, ...
Types of Fish 鱼种类 Fishes are known to reside underwater and can be identified because of their fins and gills. 众所周知,鱼类生活在水下,可以通过它们的鳍和鳃来识别。 Most of them are covered in scales, which protect their bodies against predato...
There are several exceptions to the common definition of a fish. For example,hagfishdon’t have scales and aren’t true vertebrates (or are considered primitive vertebrates); mudskippers are amphibious fish that can live outside water; lungfish use lungs instead of gills to breathe; lampreys l...
a kind of harp. This fish is dark in color, ranging from gray to black. It has a round body and a large dorsal fin. Its scales can have a shiny look. Males are usually smaller than females. Overall, this fish stands out with its striking tail and shiny, dark scales. ...
My favorite of these fish is the gold molly, which has the beautiful yellow-gold coloration of an albino but still has dark eyes. Gold Mollies Some gold mollies appear to have scales edged in red. This unusual but very beautiful color is called “sunburst.” I’ve seen sunburst mollies...
The trunk canal of fishes is contained within a series of lateral line (LL) scales. To categorise LL scale structural types, and determine their distribution, an analysis of original data was undertaken using light and scanning electron microscopy in combination with a literature survey from over ...
The Pearl Gourami has a distinctive appearance, with a pearlescent body that is covered in small iridescent scales that give it a shimmery appearance. The body is elongated and laterally compressed with large fins and white-edged, long, flowing dorsal and anal fins. ...
which are easy to keep clean and permit disinfectant application. The time necessary to rear fish and the yield per hectare depend on feeding. Trout are important sport fishes and are often raised in hatcheries for later transfer to habitable bodies of water. Some trout farms sell their fish ...
scales are reduced in size in the primitive species, whereas in the more advanced forms they are absent. As a result, the advanced species cannot crawl and are thus helpless on land. Whenswimming, a keel is formed along part of the belly, increasing surface area and aiding propulsion, ...
species ofAlpheusshare their burrows withgobyfishes. The fishes signal warnings of danger to the shrimp by body movements. Thecoral shrimp,Stenopus hispidus,a tropical species thatattainslengths of 3.5 cm (1.4 inches), cleans the scales ofcoral fish as thefishswims backward through the shrimp’s...