The Haleocomorphi contains the family of Amiidae, known more commonly as the bowfin fish. Amia calva is one such bowfin. These fish have cycloid scales and have diplospondylous caudal vertebra. This means that for every spine which comes off the vertebra, there are two centra. This is oppose to a monospondylous vertebra which has one centra per spine. Amia have a vascularized swim bladder which may be used to take in air, though these fish mainly breathe through the use of their gills. Still, they may live outside of water for some time, given their gills remain wet (ie: in muddy soil). Amia prefers slow moving waters with lots of vegetation. The males will build a nest amongst the weeds and defend them. Males will mate with a number of females and vis versa. The eggs hatch in 5-10 days depending on water tempreature. We have Amia in Massachusettes, however they are not native. Rather they were introduced in the 70's and migrated to the main rivers in the region.
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