A unique fish weight estimating calculator, just type in details of length and girth and the program will do the rest. = .000197 x 86400 The average weight is 2 to 5 lbs/1 to 3 kilograms. to 16 in. Usually they will eat nearly anything they can capture. They naturally range from Mexico to Alaska and inland to the Rockies. Unless the factor/s that caused the poorer than average condition are resolved trout tend to loose condition and weight very quickly. = 2.97 kilogram or 6.67 pounds. Better than average fish 3:1.9 p=0.75 They love the sport of trout fishing, but don't want to kill the fish. It’s quick and simple and of course if you keep the fish wet and handle it carefully it puts little extra stress on the fish so that is all good. 99. In total 615 rainbow trout (85.36 g average weight, 19.68 average total length, 52.5 kg biomass) were obtained from a commercial farm (Rastovac Fish Farm, Niksic). per pd. The problem with scales is that unless regularly calobrated they can be out significantly. Trout/Walleye Pike/Musky (1-120 inches) (1-100 inches). wt. For lentic rainbow trout, b = 2.990 and c = 0.000426, and for lotic rainbow trout, b = 3.024 and c = 0.000370. Rainbows reach a length of 12 to 30 inches. The relationship between total length (L, in inches) and total mass (W, in pounds) for steelhead and nearly all other fish can be expressed by an equation of the form: The factor b is close to 3.0 for all species, and c is a constant that varies among species. = .0000197 x (20x20x14) WEIGHT= 2880 / 800. = .0000197 x 18900 Relative weight is one of several common measures of condition used in fisheries assessment and management. = 1.70 kilogram or 3.75 pounds. = 3.40 kilogram or 7.5 pounds, 60cm weight = .0000197 x (60x60x(60×0.7)) Ponds with natural fertility and accompanying waterweed growth are likely to produce enough food for 50 to 100 pounds of trout per surface acre of Water. wt. WEIGHT= 20 x 144 / 800. The rainbow trout (Oncorhynchus mykiss) is a trout and species of salmonid native to cold-water tributaries of the Pacific Ocean in Asia and North America. The blue line is the best … You must be logged in to post a comment. Thinner than average fish 3:1.7 p=0.5 This enormous fish was caught on September 5, 2009 in Alberta, Canada by Sean Konrad using a X-Rap Jointed Shad with a Bonito color pattern. Poor condition slabby fish 3:1.6 p=0.4. The relative weight of a fish does not indicate its health on a continuous scale from 0 -100%, however. = .000197 x 151200 So for example the average weight of trout 20cm, 30cm, 45cm and 60cm is calculated as follows: 20cm weight = .0000197 x (20x20x (20×0.7)) = .0000197 x (20x20x14) = .0000197 x … Recently at Plummer's Lodge on Great Bear Lake there was a 78.85 pound trout that was caught and released and is the unofficial World Record Lake Trout at this time. In my test 90% of the results were within a range of 880 grams to 1.14 grams and on average negatively skewed for a 1 kilogram weight but for a 2 kilogram weight the margin of error was the opposite and positively skewed at 1.890 grams to 2.29 grams. The all-tackle record for the largest Rainbow Trout is 48 pounds. The relationship between length and mass is not linear. What this means is that if a trout does not meet the profile of length to diameter of 3:1.8 for an average trout and your looking for a more accurate estimate of weight change the ‘p’ exponent to the following: Proportions: Th e better growth was achieved by trout in 0-2 group, with total weight gain of 67,80 g or 0,75 g per day, which is signiffi cante higher growth than the O-1 group trout (p<0,05). Length: From the nose of the fish to the fork of the tail (Not the tips of the tail) straight down the lateral line of the fish.Try to avoid the temptation to squeeze in an extra couple of cms! That relationship over time between the length of a trout and its weight is unfortunately a non-linear relationship so it’s not just a matter of multiplying the length by a standard factor. in oz. The relationship described in this section suggests a 13 in (33 cm) lentic rainbow trout weighs about 1.0 lb (0.45 kg), while an 18 in (46 cm) lentic rainbow trout weighs about 2.5 lb (1.1 kg). Length: Girth: Fish Type: Calculated Weight. = .0000197 x (30x30x21) WEIGHT = LENGTH x GIRTH 2 / SHAPE FACTOR. Rainbow trout are of edible size within 6 months, but these will be smaller fish that weigh around 1 pound and will not have the intense flavor of older fish. The relationship described in this section suggests a 13 in (33 cm) lentic rainbow trout weighs about 1.0 lb (0.45 kg), while an 18 in (46 cm) lentic rainbow trout weighs about 2.5 lb (1.1 kg). But when you catch that prize trout, you certainly want to record the length and weight and share it with photos. What you need is an equation that take into account the non-linear variables as shown in the ‘power law equation” below which in this graphic representation shows the relationship of trout length to average weight. They are generally surface feeders, but the fish which are living in large lakes and oceans are bottom feeders and eat mollusks, crustaceans worms, other fish, squid and amphipods. The calculated length at each age can be compared to the length and age chart to determine how the fish in your lake or pond compare to average-sized fishes for Michigan lakes and ponds. Trout have a shape factor of 800 and a girth ratio of (.6). = .0000197 x (60x60x42) In metric units for L in cm and W in grams, use c=0.0119 for lentic and c=0.0100 for lotic. Estimate the weight of salmon or trout by length and girth Cut out or phot ocopy this page and stash it in your tackle box or fishing vest! Easily convert a trout's weight by using the fishes length in inches. Fish using scales is that unless regularly calobrated they can capture 'catch and release ' anglers between length girth! Trout-Fishing lifetime to make trolling more fun 12 inches is as follows measure 120 cm ( in. 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