What's the difference between a dolphin and a "dolphin-fish?"?
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Dolphins are cetaceans (i.e., whales), and as such mammals.  The Mhai-Mhai is a "bony fish", or teleost, that lives in the open waters of the Atlantic and Pacific.  There are more than one "dolphin" species, and Mhai-Mhai is the Hawaiian vernacular for the common dolphin fish (Coryphaena hippurus).  So, not to worry, you did not eat Flipper!
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Most dolphins have acute eyesight both in and out of the water and their sense of hearing is superior to that of humans. Though they have a small ear opening on each side of their head it is believed hearing underwater is also if not exclusively done with the lower jaw which conducts the vibrations to the middle ear via a fat filled cavity in the lower jaw bone. Hearing is also used for echolocation which seems to be an ability all dolphins have. The dolphin's sense of touch is also well-developed.\n\nHowever, dolphins lack an olfactory nerve and thus have no sense of smell, but they can taste and do show preferences for certain kinds of fish. Since dolphins spend most of their time below the surface in the wild, just tasting the water could act in a manner analogous to a sense of smell.
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Dolphins are aquatic mammals related to whales and porpoises. The name is from Ancient Greek δελφίς delphis meaning "with a womb", viz. "a 'fish' with a womb". A group of dolphins can be called a "school" or a "pod".\n\nThe word is used in a few different ways. It can mean:\n\nAny member of the family Delphinidae (oceanic dolphins), \nAny member of the families Delphinidae and Platanistoidea (oceanic and river dolphins), \nAny member of the suborder Odontoceti (toothed whales; these include the above families and some others), \nUsed casually as a synonym for Bottlenose Dolphin, the most common and familiar species of dolphin. \nIn this article, the second definition is used.\n\nPorpoises (suborder Odontoceti, family Phocoenidae) are thus not dolphins in this sense. Orcas and some related species belong to the Delphinidae family and therefore qualify as dolphins, even though they are called whales in common language.\n\nThere are almost 40 species of dolphin in 17 genera. They vary in size from 1.2 m (4 ft) and 40 kg (88 lb) (Maui's Dolphin), up to 9.5 m (30 ft) and 10 tonnes (the Orca). Most species weigh about 50 to 200 kg (110 to 440 lb). They are found worldwide, mostly in the shallower seas of the continental shelves, and all are carnivores, mostly eating fish and squid.\n\nThe family Delphinidae is the largest in the Cetacea, and relatively recent: dolphins evolved about 10 million years ago, during the Miocene.\n\nSuborder Odontoceti, toothed whales \nFamily Delphinidae, oceanic Dolphins \nGenus Delphinus \nLong-Beaked Common Dolphin, Delphinus capensis \nShort-Beaked Common Dolphin, Delphinus delphis \nGenus Tursiops \nBottlenose Dolphin, Tursiops truncatus \nIndo-Pacific Bottlenose Dolphin, Tursiops aduncus \nGenus Lissodelphis \nNorthern Rightwhale Dolphin, Lissodelphis borealis \nSouthern Rightwhale Dolphin, Lissiodelphis peronii \nGenus Sotalia \nTucuxi, Sotalia fluviatilis \nGenus Sousa \nIndo-Pacific Hump-backed Dolphin, Sousa chinensis \nChinese White Dolphin (the Chinese variant), Sousa chinensis chinensis \nAtlantic Humpbacked Dolphin, Sousa teuszii \nGenus Stenella \nAtlantic Spotted Dolphin, Stenella frontalis \nClymene Dolphin, Stenella clymene \nPantropical Spotted Dolphin, Stenella attenuata \nSpinner Dolphin, Stenella longirostris \nStriped Dolphin, Stenella coeruleoalba \nGenus Steno \nRough-Toothed Dolphin, Steno bredanensis \nGenus Cephalorynchus \nChilean Dolphin, Cephalorhynchus eutropia \nCommerson's Dolphin, Cephalorhynchus commersonii \nHeaviside's Dolphin, Cephalorhynchus heavisidii \nHector's Dolphin, Cephalorhynchus hectori \nGenus Grampus \nRisso's Dolphin, Grampus griseus \nGenus Lagenodelphis \nFraser's Dolphin, Lagenodelphis hosei \nGenus Lagenorhyncus \nAtlantic White-Sided Dolphin, Lagenorhynchus acutus \nDusky Dolphin, Lagenorhynchus obscurus \nHourglass Dolphin, Lagenorhynchus cruciger \nPacific White-Sided Dolphin, Lagenorhynchus obliquidens \nPeale's Dolphin, Lagenorhynchus australis \nWhite-Beaked Dolphin, Lagenorhynchus albirostris \nGenus Orcaella \nAustralian Snubfin Dolphin, Orcaella heinsohni \nIrrawaddy Dolphin, Orcaella brevirostris \nGenus Peponocephalia \nMelon-headed Whale, Peponocephalia electra \nGenus Orcinus \nKiller Whale, Orcinus orca \nGenus Feresa \nPygmy Killer Whale, Feresa attenuata \nGenus Pseudorca \nFalse Killer Whale, Pseudorca crassidens \nGenus Globicephala \nLong-finned Pilot Whale, Globicephala melas \nShort-finned Pilot Whale, Globicephala macrorhynchus \nFamily Platanistoidea, River Dolphins \nGenus Inia \nBoto (Amazon River Dolphin), Inia geoffrensis \nGenus Lipotes \nChinese River Dolphin (Baiji), Lipotes vexillife \nGenus Platanista \nGanges River Dolphin, Platanista gangetica \nIndus River Dolphin, Platanista minor \nGenus Pontoporia \nLa Plata Dolphin (Franciscana), Pontoporia blainvillei \nSix animals in the family Delphinidae are commonly called "whales"
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Suppose if some dolphins/porposises were taught to jump out of nets at the right time and were released, they could teach others?\nThe japanese deliberately use nets they can't get out of because they see them as preditors of the fish.
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Dolphins swim in front of boats. Not for play, but it is due to the Water around the bow of the boat creates a low pressure system. So, the dolphins get pushed by the boat and do not have to swim as hard to cover vast distance. \n\nAs for fish swimming under whales, it is the same reason. The huge whale disturbs the rigidity of the water making for easier swimming. That is of course if you are talking about fish right up against the whale. \n\nOtherwise, A fish following a whale is just following. Doubtful, it is looking for a scrap as many fish do not comsume kreel. As whales do.\n\nAnimals much like humans are Lazy when it comes to spending energy. Geese and ducks fly in Vee formations for the same reasons. Disturbance of the air.
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The majority of small tooth whales are called dolphins.  They are mammals of the order Cetacea and the families Plantanistidae and Delphinidae and include about 50 species.  All have a beak like snout and sharp, conical teeth.  The term porpoise is sometimes applied to many of the same species, but porpoises, are members of the family Phocaenidae and have a blunt snout and spade or chisel shaped teeth.  The dolphin fish, is neither a dolphin nor a porpoise.  It is a sport fish related to the mackerels.
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swordless swordfish or fishofnosword
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They are cousins.  The cuttlefish has a cuttlebone, the squid does not.
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A dolphin reproduces by laying belly to belly. The female is on top and the male swims beneath her. She will usually mate with several males in one season. This is thought to believed to be a strategy to help protect her young. Male dolphins sometimes get aggressive towards calves and may even kill them if they are not their own. By mating with several males, the female as well as the male(s) have no idea who the father is, and is less likely to attack a baby.
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1 fish is always fish...  \nmultiple fish of the same variety are still fish..\na group of fish of different varieties are fishes.
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Dolphins do live in freshwater, but you can't take a dolphin that lives in salt water and put them in a freshwater environment. \n\nHere are some dolphins that live in freshwater.\nBoto http://en.wikipedia.org/wiki/Boto\nChinese River Dolphin http://en.wikipedia.org/wiki/Chinese_River_Dolphin\nGanges and Indus River Dolphin http://en.wikipedia.org/wiki/Ganges_and_Indus_River_Dolphin\n\n\nPlaces like SeaWorld have salt water tanks--
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A dolphin...cause they mate for life and they are very intelligent too.
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The dolphin's life can be, at times, very confusing. To make this easier to understand, we have made a cycle showing you the dolphins life. Like humans, dolphins are mammals. They give birth to live young. The only mammal that doesn't give birth to live young is the Platypus. Dolphinsare considered as one of the smartest animals in the world!  There life starts out when there babies, and when they grow older they choose which direction that their going to take. Most babies will stay with the pack that their mothers are in. When they are adults, they will find a mate. During the mating season, reproduction will occur.
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It depends what dolphin you are talking about in particular. Almost all dolphins live in the ocean. There are a few fresh water dolphins--most freshwater are in danger of becoming extint. Some dolphins, like the killer whale has a wide range in where it lives. It can live up north near Alaska, in the icy cold waters, and there are some killer whales that can migrate as far south as Florida. Some dolphins are native to certain areas of the world.\n\nIf you say what dolphin you are talking about, I can probably help you better.
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I like whales and dolphins. They are magestic and some are huge, not all of them though. I like them so much, I plan to go college to get my doctor's degree so I can study them as a cetologist.
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God made them that way...lol....they are different animlas. Gosh why are whales bigger than guppies?
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Carp are fish. They move forwards by swimming.\nCarpenters are tradespeple. They usually move forwards in pick -up trucks.