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Probably, dorsal, ventral and tail fins.
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∙ 12y ago
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Are marine mammal dorsal fins genes derived from fish dorsal fin genes?
No. The fins evolved from land ancestors who went into the water. This have nothing to do with fish.
Are chickens fish?
No, they are not fish. They are a type of domesticated bird. Birds are tetrapods, four-limbed animals, while most fish have unpaired fins. "Chicken of the Sea" is a brand of canned tuna, and does not imply an aquatic species of chicken.
Are all mammals tetrapods?
Amphibians, reptiles, birds, and mammals are all tetrapod's. The tetrapod's evolved from the lobe-finned fishes about 395 million years ago in the Devonian Period.
Why do Jewish people have fish with fins?
all fish have fins
Fins on side of a fish?
of corse theres fins on the side of a fish :)
Do jawless fish have unpaired fins?
yes, jawless fish have no paired fins
What are the paired appendages of a fish?
fins!
What are the 3 types of fish?
Cartilaginous Fish, their body frame in mainly cartilage. Tough and flexible, cartilage provides enough l support to allow these fish to grow to very big sizes. Cartilaginous fish include sharks, rays, skates and chimaeras. Ray-finned fish are the most diverse of the three groups of fish. The group includes mor than 23,000 species such as salmon, trout, lanternfish, cavefish, cods, anglerfish and many others. These fish consist of bone. Lobe-finned fish are a group of bony fish that have paired fins. Ancient lobe-finned fish are thought to be the ancestors of the first four-legged land vertebrates or tetrapods.
What makes a fish different from a whale?
Fish have gills, whales have lungs Fish are generally ectothermic (cold-blooded), whales are endothermic (warm-blooded) Fish have fins with no digits, whales have flippers that clearly have digits within. Fish usually have scales but never hair, whales are mammals and have some residual hair Fish cannot feed their young directly, whales feed their babies via mammary glands. Nearly all fish are oviparous with the females laying eggs and males fertilizing them by spreading their sperm on top, all whales are placental. "Fish" is recognized as a paraphyletic group that excludes tetrapods, whales are tetrapods.
What are the 3 main type of fishes?
Cartilaginous Fish, their body frame in mainly cartilage. Tough and flexible, cartilage provides enough l support to allow these fish to grow to very big sizes. Cartilaginous fish include sharks, rays, skates and chimaeras. Ray-finned fish are the most diverse of the three groups of fish. The group includes mor than 23,000 species such as salmon, trout, lanternfish, cavefish, cods, anglerfish and many others. These fish consist of bone. Lobe-finned fish are a group of bony fish that have paired fins. Ancient lobe-finned fish are thought to be the ancestors of the first four-legged land vertebrates or tetrapods.
What saltwater fish have both fins and scales?
Most. There are very few fish that have no scales and all fish have fins.
What is an evolutionary innovation associated with amphibians?
The earliest forms of amphibians evolved from lobe-finned fish in the Devonian Period, around 350 million years ago. These fish had strong, bony fins that allowed them to drag themselves on land, and some of them developed lungs for breathing air. These two adaptations were very helpful in their freshwater environments that were often stagnant and dried out. Eventually the bony fins of these fish evolved into limbs that became better suited for terrestrial locomotion over time. Early amphibians still spent most of their lives in water and always had to lay their soft eggs in water.One of the earliest and most well known ancestors of amphibians (and all tetrapods in general) is a lobe-finned fish called Eusthenopteron. Although it never actually went on land, it still had four fins with bone structures homologous to all modern tetrapods, and also had internal nostrils and enfolded enamel found on primitive labyrinthodont amphibians.Another important transitional form is Tiktaalik, who is an important link in the transition between lobe-finned fish and tetrapods. By the structure of its jointed fins, which contain wrist bones, it was probably one of the first fish to crawl on land. However, it only did so under certain circumstances and still spent almost all of its time in water. It had both gills and primitive lungs, and had a flattened head shaped like that of an amphibian's.The earliest amphibians include Acanthostega and Icthyostega. Their primitive limbs contained digits, but were still poorly adapted for moving efficiently on land. Yet it was a good start, and they would be succeeded by labyrinthodonts such as Hynerpeton and Eryops, who are the ancestors of true amphibians.The first modern amphibians emerged in the Carboniferous Period and had all the adaptations necessary to make them suitable for living both in water and on land. Amphibians became the dominant terrestrial vertebrates through most of the Carboniferous until they are replaced by their descendants, the reptiles.
