Dichotomous Key for Common Fish
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Dichotomous Key for Common Fish 1a Tail is long, whip-like…………………………………………….….. Southern stingray 1b Tail is fan-shaped or forked……………………………….………..... 2 2a Body is covered in scales……………………………………….….… 8 2b Body does not appear to be covered in scales…………………..….… 3 3a Upper portion of tail is much larger than lower portion of tail ……… 4 3b Upper and lower portions of tail are symmetrical………………….… 5 4a Head is pointed………………………………………………………. Black-tip shark 4b Head is rounded; shovel-shaped.…………………………………….. Bonnethead shark 5a Fish has silvery/reflective coloration………………………………… 6 5b Fish is dull brown in color…………………………………………… Gag grouper 6a Fish has dark spot on gill cover and at base of pectoral fin………….. Jack crevalle 6b Fish has no spots on body……………………………………………. 7 7a Body is longer than it is deep, symmetrical top to bottom…………… Florida pompano 7b Body is about as deep as it is long; head steeply sloping……………. Lookdown 8a Tail is fan shaped……………………………………………………. 9 8b Tail is forked………………………………………………………… 14 9a First and second dorsal fins are fused……………………………….. Grey snapper 9b First dorsal fin is separate from second dorsal fin ………………….. 10 10a Fish has vertical stripes……………………………………………… 11 10b Fish does not have vertical stripes……………………………………13 11a Anal fin and second dorsal fin are enlarged and tapering…………… Atlantic spadefish 11b Second dorsal fin is elongated; anal fin is small…………………….. 12 12a First dorsal fin has 10 fin rays……………………………………….. Atlantic croaker 12b First dorsal fin has less than 10 fin rays; chin has multiple barbels.… Black drum 13a Fish has multiple spots on body, dorsal and caudal fins…………….. Spotted sea trout 13b Fish has single or multiple spots near base of tail but not on fins…... Red drum 14a Fish has a single dorsal fin……………………………………….….. Bay anchovy 14b Fish has first and second dorsal fins (may be fused)………………... 15 15a Fish has vertical bars on its body………………………………….… 16 15b Fish does not have vertical bars on body………………………….… 17 16a Fish has dark spot above pectoral fin…………………………………. Pinfish 16b Fish has no spots, only stripes………………………………………… Sheepshead 17a Fish has single dark stripe along its lateral line…….………………… Snook 17b Fish has multiple horizontal stripes…………………………………... Striped mullet Directory: uploads uploads -> 587 Return function, r i(X) r i(0) r i(1) r i(2) r i(3) 1 0 2 4 6 Thermal Station, I 2 0 1 5 6 3 0 3 5 6 10 uploads -> Department of science and humanities department of mathematics part-a questions and answers uploads -> The Case Against the nypd’s Quota-Driven ‘Broken Windows’ Policing What Is It? uploads -> For want of a nail uploads -> Ownership Models There are two different types of ownership models uploads -> Police Militarization uploads -> City of rising star regular meting thursday, july 14, 2016 uploads -> Township of winfield uploads -> Stop Militarizing Law Enforcement Act of 2014 uploads -> The Black Panther Party’s Ten-Point Program What We Want Now! Download 13.08 Kb. Share with your friends:
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