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The palatine bones are situated at the back of the nasal cavity between the maxilla and the pterygoid process of the sphenoid bone.. They contribute to the walls of three cavities: the floor and lateral walls of the nasal cavity, the roof of the mouth, and the floor of the orbits.
Suspensorial abduction mechanism: The lateral expansion of the suspensorium (a combination of the palatine, pterygoid series, and quadrate bones) pulls on a ligament which causes the premaxilla to protrude anteriorly (e.g. Petrotilapia tridentiger). [18] [19] Some teleosts use more than one of these mechanisms (e.g. Petrotilapia). [18]
Teeth may also grow on the vomer bone or on the palatine, an area on the roof of the mouth. [3] The palatine teeth are significantly larger than the vomer teeth. [3] Gobioclinus gobio has 3 sets of fins: the dorsal, anal, and pelvic fins, which each consist of a number of rays. Its long dorsal fin consists of 19 dorsal spines. [3]
It most commonly has three spines in the anal fin and 6 to 13 spines in the dorsal fin, [6] with small teeth present on the tongue and palatine bones. [8] These fish are typically 4 to 10 inches (10 to 25 centimetres) long, but can grow to over one foot (30 cm) in length, and reach 2.25 pounds (1.02 kg). [ 4 ]
Scales of A. vulpes Bonefish head Illustration. The bonefish weighs up to 14 lb (6.4 kg) and measures up to 79 cm (31 in) long. The color of bonefish can range from very silver sides and slight darker backs to olive green backs that blend to the silver side. [4]
Osteichthyes (/ ˌ ɒ s t iː ˈ ɪ k θ iː z / ost-ee-IK-theez), [2] also known as osteichthyans or commonly referred to as the bony fish, is a diverse superclass of vertebrate animals that have endoskeletons primarily composed of bone tissue.
Fish anatomy is the study of the form or morphology of fish.It can be contrasted with fish physiology, which is the study of how the component parts of fish function together in the living fish. [1]
Fish bone is any bony tissue in a fish, although in common usage the term refers specifically to delicate parts of the non-vertebral skeleton of such as ribs, fin spines and intramuscular bones.