Species of Greatest Conservation Need

1124 species
Taxonomic Group
Federal Status
State Status
Endemic

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Species of Greatest Conservation Need (Approved On: 03/18/2024; Data Updated: 06/16/2025)
Scientifc Name Common Name Taxonomic Group Federal Status State Status Global Rank State Rank Endemic
Tantilla cucullata Trans-Pecos black-headed snake Reptiles Not Listed T
03/01/1987		 G3 S3 Yes
Terrapene carolina eastern box turtle Reptiles Not Listed Not Listed G5 S3 No
Terrapene ornata western box turtle Reptiles Not Listed Not Listed G4G5 S3 No
Thamnophis sirtalis common garter snake Reptiles Not Listed Not Listed G5 S2 No
Trachemys gaigeae Big Bend slider Reptiles Not Listed Not Listed G3 S2 No
Caretta caretta loggerhead sea turtle Reptiles Marine T
07/28/1978		 T
01/30/1997		 G2G4 S4 No
Chelonia mydas green sea turtle Reptiles Marine T
07/28/1978		 T
07/18/1977		 G3 S3B,S3N No
Dermochelys coriacea leatherback sea turtle Reptiles Marine E
06/02/1970		 E
05/15/1975		 G2 S1S2 No
Eretmochelys imbricata Atlantic hawksbill sea turtle Reptiles Marine E
06/02/1970		 E
05/15/1975		 G3 S2 No
Lepidochelys kempii Kemp's Ridley sea turtle Reptiles Marine E
12/02/1970		 E
05/19/1974		 G1 S3 No
Carcharhinus acronotus blacknose shark Sharks Not Listed Not Listed GNR S3 No
Carcharhinus brevipinna spinner shark Sharks Not Listed Not Listed GNR S3 No
Carcharhinus falciformis silky shark Sharks Not Listed Not Listed G3 S3 No
Carcharhinus isodon finetooth shark Sharks Not Listed Not Listed GNR S3S4 No
Carcharhinus leucas bull shark Sharks Not Listed Not Listed G5 S3S4 No
Carcharhinus longimanus oceanic whitetip shark Sharks T
01/30/2018		 T
03/30/2020		 GNR S2 No
Carcharhinus obscurus dusky shark Sharks Not Listed Not Listed G3 S3 No
Carcharhinus plumbeus sandbar shark Sharks Not Listed Not Listed G4 S3S4 No
Carcharhinus porosus smalltail shark Sharks Not Listed Not Listed GNR S3 No
Isurus oxyrinchus shortfin mako shark Sharks Not Listed T
03/30/2020		 GNR S2 No
Negaprion brevirostris lemon shark Sharks Not Listed Not Listed G3G4 S1S3 No
Rhizoprionodon porosus Caribbean sharpnose shark Sharks Not Listed Not Listed GNR S3 No
Sphyrna lewini scalloped hammerhead shark Sharks Not Listed Not Listed G4 S3 No
Sphyrna mokarran great hammerhead Sharks Not Listed T
03/30/2020		 G3G4 S2 No