a code wire tag is implanted, as identified by a missing adipose fin. It is illegal to tag fish unless given a permit by the DNR. Should you catch a DNR-tagged fish, it is very important to report the requested information promptly. The information provided by the angler helps DNR to determine fish population estimates, and harvest and ...

To identify the fingerlings which have been implanted with a CWT, the adipose fin is removed as shown below. Starting in 2010, Wisconsin, along with other agencies, began a mass marking project of Chinook salmon with the main objective of trying to determine the number of naturally reproduced Chinook salmon in Lakes Michigan and Huron.

Prior to 2011, lake trout stocked were given other fin clips (e.g. left ventral, right ventral, etc.). Although fish can be missed during the process of fin-clipping, and regeneration of fins can occur, we have seen evidence of natural reproduction of lake trout in Lake Michigan for decades but more have been detected since 2011.

the dorsal fin, while the bowfin’s anal fin is short - less than one quarter the length of the dorsal fin, and l The snakehead’s pelvic fins are found almost under-neath the pectoral fins, while the bowfin’s pelvic fins are set back from the pectoral fins. …

The burbot (or lawyer, eelpout, or freshwater cod) is an elongate, cylindrical fish with 2 dorsal fins, a long anal fin, and pelvic fins in front of the pectoral fins. Adults are uniformly yellow or light brown to black or mottled with dark brown or black on back and sides. Young fish conspicuously speckled with dark vermiculations.

a code wire tag is implanted, as identified by a missing adipose fin. DNR discourages anglers from tagging their own fish. Should you catch a DNR-tagged fish, it is very important to report the requested information promptly. The information provided by the angler helps DNR to determine fish population estimates, and harvest and exploitation rates.

The FIN is typically a 4- or 5-digit number. 6 | P a g e Updated 06/2021 (links updated 06/2022) 8.

his caudal fin and a female may respond by covering the male's head with her caudal fin. Female channel catfish lunge forward as they expel a gelatinous mass of up to 150 eggs at a time. Again, spawning may take several hours and the male will drive away the female when it is over. Male channel catfish also arrange eggs in the nest.

Urban storm water runoff contains pollutants from roads, parking lots, construction sites, industrial storage yards and lawns.

spinous dorsal fin (on the back closest to the head) has a scalloped edge and is supported by strong spines; the second dorsal fin is soft‐rayed and lines up almost exactly with the anal (on the belly behind the vent) fin. The caudal (tail) fin is moderately forked and has rounded tips.