Rob Neumann

Sep 8, 2024 | in-fisherman.com | Rob Neumann

Skip to main content Subscribe Now Give a Gift  |   Subscriber Services Advertisement Get The Magazine Subscribe & Save. Digital Now Included! Several methods are available to estimate the weight of a fish. Some use length as well as girth measurements.

Jul 21, 2024 | in-fisherman.com | Rob Neumann

Several methods are available to estimate the weight of a fish. Some use length as well as girth measurements. Weight also can be estimated using only length measurements based on relationship between length and weight. Length-weight equations can be developed for specific waters, regions (e.g., states), or for a particular species. Formulas containing length as well as girth are often most accurate for estimating weight, because the fatness or plumpness of the fish is accounted for.

Jul 17, 2024 | in-fisherman.com | Rob Neumann |Steve Quinn |Hal Schramm |Ralph Manns

Invasive carp conjure up mental images of flying fish and hyperabundance. Millions are spent annually to control and curb the spread of black carp, silver carp, and bighead carp. Specifically, bigheaded carps (silver carp and bighead carp) are highly-publicized, abundant, and their impacts are well understood in established regions such as in the Mississippi River basin. In the Grand Lake/Neosho River system, invasive carp are in low abundance, and thus locating and removing them are difficult.

Jul 3, 2024 | in-fisherman.com | Rob Neumann |Steve Quinn |Hal Schramm |Ralph Manns

Sunlight drives photosynthesis, and oxygen is a product of that process. So is more oxygen found around and under floating vegetation than in nearby open water? Researchers at the University of Washington measured dissolved oxygen concentrations under and near thick mats of vegetation in two ponds.* In Bull Lake, mats of mixed coontail, milfoil, and Elodea produced high concentrations of dissolved oxy­gen at the surface (15 to 21 parts per milllion) during the day.

Apr 17, 2024 | in-fisherman.com | Rob Neumann |Steve Quinn |Hal Schramm |Ralph Manns

There’s a lot of chatter these days about live-imaging sonar (aka, live-scope, forward-facing sonar). Live-imaging sonar (LIS) has been quickly adopted by many crappie anglers; and there is concern among anglers, guides, and fishery managers that the increasingly common use of LIS may cause declines in crappie populations.