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Cutthroat Trout

Salmo clarki

How to identify: 

 Lateral line present.

 Pink streak under jaw (mandible).

 Spotted over entire body, more concentrated as you reach the tail.

 Small teeth located behind tip of tongue (Hyoid teeth).

 

Fish Index| Mesa Field Trip

Rainbow Trout

Salmo gairdneri 

How to identify: 

 Spots on dorsal and anal fin.

 Parr marks on juveniles only.

 Pink streak across body.

 Belly covered in spots.

 Lateral line present.

 

Fish Index| Mesa Field Trip

Brown Trout

Salmo trutta 

How to identify: 

 Spots absent on caudal fin.

 Few spots on upper section of dorsal fin.

 Large spots across body.

 Can reach 2 ft. in length.

 

Fish Index| Mesa Field Trip

Brook Trout

Salvelinus fontinalis 

How to identify: 

 Wormy back with light streaks on dark background.

 Some red spots on belly.

 Light spots on dark background.

 Emarginated fins.

 Males have red bellies.

 

Fish Index| Mesa Field Trip

Lake Trout

Salvelinus namaycush 

 

How to identify: 

 Body covered in irregular white spots on dark background.

 Color can vary from light gray to almost black.

 Can reach 3 ft. in length.

 

Fish Index| Mesa Field Trip

Mountain Whitefish

Prospium williamsoni

 

How to identify: 

 Snout does not extend past eye.

 All fins have slight black tips.

 Head is rounded.

 Can reach 15 in. in length.

 

Fish Index| Mesa Field Trip

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