rainbow trout length to weight chart

Thinner than average fish 3:1.7 p=0.5 The above graph shows weight vs. length of spotted sea trout measured by colleagues and I from Big Lake in 2011 and 2012. Growth rates of rainbow trout in farms are much higher those that of wild fish, but growth rates in farms also vary with water temperature. = .0000197 x 5600 Give it a go and compare the results to a set of calibrated scales … I am sure you will be pleasantly surprised. If you want a more accurate estimate of a trout’s weight you will have to modify the exponent ‘p’ to filter out some of the ‘non-linear’ variables related to the condition of the fish as determined by its diameter at the largest girth. Believe it or not the calculation that follows is more consistent and the margin of error is often less and of course, you don’t always have scales with you. Good Fat 25.5 10 4oz 5oz 5oz 6oz 6oz 28 11 6oz 6oz 7oz 8oz 9oz 30.5 12 7oz 8oz 9oz 10oz 11oz 33 13 10oz 11oz 12oz 13oz 15oz The problem with scales is that unless regularly calobrated they can be out significantly. The length-weight relationships shows the b value were 3.39. 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. 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. Also, chart-plotters and accurate depth-sounders allow fish to be more accurately targeted at various depths and locations. Relative weight is one of several common measures of condition used in fisheries assessment and management. p=The power of 0.70 (for a standard trout. If a fish girth is not specified, the default value Fish Girth = 0.58 × Length is used. 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. = .000197 x 172800 I also noted that the movements in weight of trout above and below the average behaves differently. They love the sport of trout fishing, but don't want to kill the fish. = 2.99 kilogram or 6.67 pounds, 60cm weight = .0000197 x (60x60x(60×0.4)) = 2.97 kilogram or 6.67 pounds. Made by Andy and Ally Gowans. Length: Girth: Fish Type: Calculated Weight. WEIGHT= 2880 / 800. Poor condition slabby fish 3:1.6 p=0.4. The inverse does not apply to trout in poorer condition than the average. Read more about this topic:  Rainbow Trout, “At length they all to merry London came,To merry London, my most kindly nurse,That to me gave this life’s first native source;Though from another place I take my name,An house of ancient fame.”—Edmund Spenser (1552?–1599), “I, being born a woman and distressedBy all the needs and notions of my kind,Am urged by your propinquity to findYour person fair, and feel a certain zestTo bear your body’s weight upon my breast:”—Edna St. Vincent Millay (1892–1950). 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). 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. A total of 70samples of rainbow trout ranging from length 20 to 35.3 cm, weight ranging from 175 to 810 and breadth from 4.8 to 9.4. Lake Trout Pike/Musky (1-120 inches) (1-100 inches) = 0.372 kilogram or 0.820 pounds, 45cm weight = .0000197 x (45x45x(45×0.7) Top quality fish 3:2.0 p=0.8 Girth: Measured immediately in front of the dorsal fin (Typically the fattest part of the fish).It is possible to estimate the weight of your fish without a girth measurement but it will not be as accurate. Th e average trout weight gain during the experiment Changes in the total and daily weight gain and feed intake of trout in both groups is shown in Table 2. This means that if it’s length is 60cm on average you should expect its diameter at its widest girth to be 36cm. The largest recorded rainbow trout can measure 120 cm (47 in) long and weigh 24 kg (53 lb). The Lake Trout (Salvelinus namaycush) is loved both as a food fish and game fish. WEIGHT= 20 x 144 / 800. Trout/Walleye Pike/Musky (1-120 inches) (1-100 inches) Length to weight trout conversion chart. This fish size chart reflects the average weight of stream trout in freshwater for each given … = 1.26 kilogram or 2.768 pounds, 60cm weight = .0000197 x (60x60x(60×0.7)) Trout in better than average condition put weight consistently but slowly over time in response to available food and environmental criteria. Length: Girth: Fish Type: Calculated Weight. Easily convert a trout's weight by using the fishes length in inches. = .0000197 x 63787 = .000197 x 151200 = .000197 x 86400 in oz. The Rainbow trout fish eat a variety of animal life, but aquatic insects, terrestrial insects, snails and small fishes often make up the bulk of their diet. Usually they will eat nearly anything they can capture. Average condition 3:1.8 p=0.7 Accordingly the exponent ‘p’ for trout above the average increases at increments smaller than the increments of fall for trout that are below the average weight for size and are suffering due to age, sickness, injury or unfavorable environmental circumstances. 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. Estimate the weight of salmon or trout by length and girth per pd. As rainbow trout grow, they lengthen and increase in mass. Better than average fish 3:1.9 p=0.75 The typical lifespan of the Lake Trout is 10-40 years. A unique fish weight estimating calculator, just type in details of length and girth and the program will do the rest. 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