ZOOL 403 Lecture Notes - Lecture 17: Eel Life History, Osteoglossomorpha, Clupeiformes
9 May 2020
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Document Summary
Reproduction in ray finned(actinopterygians): oviparous: reproductive modes of fishes extend from broadcasting eggs and sperm to extensive parental care, male seahorse brood the eggs and then the offspring emerge from the brood pouch. Sex determination in teleosts: teleosts can develop sex from the immature fish can be males/females. That"s a remarkable accomplishment for a fish because each time the blood passes through the gills it comes into temperature equilibrium with the water. The only fish known to keep its entire body warm opah. The opah forages at greater depths and remains in deep water than the albacore tuna: opah spend most of their time in colder deeper water, albacore tune forage mostly in wamer surface waters. Sarcopterygii: fleshy pelvic and pectoral fins with single basal skeletal element, muscular bones at base of paired fins, enamel on surface of teeth. same as us.
