fish week 2

Fish this week: burbot, alewife, gizzard shad, northern pike, muskellunge, central mudminnow, brown trout, rainbow trout, lake trout, and cisco -- Terms this week: catadromous life cycle, anadromous life cycle, and potamodromous life cycle

catadromous life cycle

eggs are laid in __saltwater__, spend most of their lives in __freshwater__, then go back to __saltwater__ to breed and lay eggs

anadromous life cycle

eggs are laid in __freshwater__, spend most of their lives in __saltwater__, then go back to __freshwater__ to breed and lay eggs

potamodromous life cycle

eggs are laid __upstream__, spend most of their lives __downstream__, then go back __upstream__ to breed and lay eggs

burbot order

Gadiformes

burbot family

Gadidae

burbot scientific name

*Lota lota*

burbot characteristics

* single barbel on chin
* longer dorsal and anal fins
* small pelvic fins positioned anterior(in front of) to pelvic fins
* 2 dorsal fins; 1 short 1 long
* mottled light and dark brown color

alewife order

Clupeiformes

alewife family

Clupeidae

alewife scientific name

*Alosa pseudoharengus*

alewife characteristics

* saw-tooth keel on belly
* oblique mouth
* no lateral line
* lower jaw meets/extends beyond snout
* forked caudal fin

gizzard shad order

Clupeiformes

gizzard shad family

Clupeidae

gizzard shad scientific name

*Dorosoma cepedianum*

gizzard shad characteristics

* long, whip-like ray on end of dorsal fin
* blunt snout
* no lateral line
* notch in upper center of jaw
* saw-tooth keel on belly
* subterminal mouth

northern pike order

Esociformes

northern pike family

Esocidae

northern pike scientific name

*Esox lucius*

northern pike characteristics

* light spots on darker background
* prominent jaw shaped like duck bill
* dorsal and anal fins positioned far back
* \~5 submandibular pores on each side of lower jaw
* fully scaled cheek & partially scaled operculum
* adults grow to 56 inches

muskellunge order

Esociformes

muskellunge family

Esocidae

muskellunge scientific name

*Esox masquinongy*

muskellunge characteristics

* rows of dark spots on light body
* 6-10 submandibular pores on each side of lower jaw
* prominent jaw shaped like a duck bill
* dorsal and anal fins far back on body
* adults grow up to 72 inches

\*small specimen in lab

central mudminnow order

Esociformes

central mudminnow family

Esocidae

central mudminnow scientific name

*Umbra limi*

central mudminnow characteristics

* rounded caudal fin w/ black bar at base
* dark, vertical bars on body length
* dorsal fin in front of anal fin base (dorsal fin 2x length of anal fin)
* relatively small; up to 6 inches

\*remember black bar and round caudal fin for future weeks

brown trout order

Salmoniformes

brown trout family

Salmonidae

brown trout scientific name

*Salmo trutta*

brown trout characteristics

* orange/red adispose fin
* dark (red or black) spots w/ pale halo on body
* many spots on operculum
* square, unforked tail
* usually no spots on tail

rainbow trout order

Salmoniformes

rainbow trout family

Salmonidae

rainbow trout scientific name

*Oncorhynchus mykiss*

rainbow trout characteristics

* slightly forked tail
* small, irregular spots on body
* radiating pattern of spots on tail
* adispose fin present

lake trout order

Salmoniformes

lake trout family

Salmonidae

lake trout scientific name

*Salvelinus namaycush*

lake trout characteristics

* light, bean-shaped spots on darker body
* deeply forked caudal fin
* white anterior edge on ventral fins
* adispose fin present

cisco order

Salmoniformes

cisco family

Salmonidae

cisco scientific name

*Coregonus artedi*

cisco characteristics

* long body, round in cross section
* terminal mouth with no canines
* lateral line present
* solid color with no prominent markings
* adispose fin present