subject: Different Facts and Information Regarding Fish Species [print this page] There are approximately twenty-five thousand varieties of Tropical Fish in the entire world, and an individual who studies about fishes is an ichthyologist. All of the fish species do have backbones or they are called vertebrates, and they are breathing through their gills, they have scales and fins. There are also lots of fishes who are having protrusions in their heads.
Shapes, colors and sizes of the fish species are varying; you will need excellent-quality pictures to assist you with the process of identification. The male and female fish of different species have diverse colors and different body shapes, though there are some that have no physical differences.
Fish secretes slime or mucus from the skin which provides them protection against the infections and parasites. The slime also helps different kind of Tropical Fish species for moving faster into the water. There are also fish species that releases toxins from their slime for warding off the attacks of their enemies. And there are some that uses their slime for feeding their young.
The gills of the fish allow them to breath, and it has a thin sheet that contains tissue with blood vessels. When the water passes into the gills, the oxygen will be absorbed in the blood stream as the carbon dioxide will be passing out of the water. Gills were protected by the bony plate known as the operculum.
The fin of the Tropical is the external attachment or the limb of the fishes. The fins are utilized for stabilization, direction, or propelling of the fish species under the water. There are several types of fins that vary from specie to species, but here are the most common along with their specific functions:
Dorsal Fins - they are located at the back of the fish and it is for the fish stability for swimming.
Caudal Fins - they are located at the tail of the fishes and serve for the propelling under the water.
Ventral Fins - they are at the pelvic area of the fishes and act also for stability or strength in swimming.
Anal Fins - these fins are located nearby the anus of the fishes and they are also acting as stability for the swimming.
Pectoral Fins - they are located at the breast of the fishes and they are acting for the side-to-side movements of the fish and also with the locomotion.
Cephalic Fins - they are the horns of the manta rays and also fishes of their relations.
Adipose Fins - they are the extra fleshy fins located at the back and behind the dorsal fins for the stability of swimming too.
Different Facts and Information Regarding Fish Species
