WebApr 9, 2024 · Hint: Placoid scales are tiny, tough scales that cover the skin of cartilaginous fishes or elasmobranchs which include fishes like sharks, rays, etc. The placoid scales are somewhat similar to the scales of the bony fishes; they are like teeth covered with enamel. Complete answer: Placoid scales are also known as dermal denticles as they are … WebThey possess features found in both sharks and bony fishes. They are like early bony fishes in possessing ganoidlike scales and a partially ossified internal skeleton. Certain aspects of the jaw appear to be more like those of bony fishes than sharks, but the bony fin spines and certain aspects of the gill apparatus would seem to favour relationships with …
Look at fish scales under the microscope - My microscopy world
WebOct 19, 2024 · A giant sunfish believed to be the world's heaviest bony fish has been discovered in the Azores archipelago, Portugal, weighing a whopping 2,744 kilograms … total container weight
Placoid scales are found ina. Cartilaginous fishes\/sharks ...
WebMar 31, 2024 · fish, any of approximately 34,000 species of vertebrate animals (phylum Chordata) found in the fresh and salt waters of the world. Living species range from the primitive jawless lampreys and hagfishes … WebFeb 13, 2024 · The ganoid scale is found on bowfin, gar, sturgeon and bichirs. ... Similar to the scales in bony fish, they grow with the fish, documenting their journey along the way. Cosmoid . Probably the least common scale is the cosmoid scale, which is only found on lungfish and the mostly extinct lobefin. WebMalaysian Golden Crossback Arowana, this group of fish are sometimes (rather strangely) called “bony tongues” because of a toothed plate of bone that they have on the lower … total container network