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Are groupers, surfperches, guppies, and sharks viviparous or oviparous?
People habitually assume that fish are all oviparous, so are the newly appearing fish species on the market - the grouper, the surfperch, the guppy - and the traditional ocean overlord, the shark, oviparous or viviparous? According to relevant ichthyology data, the first three small fish are all oviparous, but the shark