If you measure accurately, you will be surprised how close your estimate gets to the actual weight at the scales. The calculator uses the standard accepted formula of weight estimation that we have found to be very accurate to actual weights when tested against fish weighed on certified scales. To estimate the weight of a shark, try this method: Square the girth in inches Multiply the girth by the length in inches Divide that number by 800. Give our Big Game Fish Weight Estimator a try. The weights are an estimate because the amount of rock, planting, thickness of glass are assumed figures. Aquarium Weight. The formula that uses length times girth squared divided by 800 to calculate an estimated weight of a generalized fish does not fit the highly variable length-weight relationship for common snook, so we provide a table of mean observed weights of snook of known lengths. * PLEASE NOTE: This is an estimate only. Over 250 Saltwater Fish Species Around Southern Africa! For planting and rocks, this includes any decor, but not fish, so that you can see what we have assumed. By nature, this is a rough estimate only, and will give an average, approximate weight. Note: Measure the length from the tip of the nose to the fork of the tail, not the tip of the tail. Length/Weight Conversions for Marine Fishes of Texas. *courtesy of the University of Delaware Sea Grant. Saltwater Fishing 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. Edibles. Below is an estimate of aquarium weights comparing empty to full, freshwater or saltwater. Fish Weight Calculator: Overview Features Species Download Contact Fish Species. Calculate the weight of your recent catch using our online fish weight calculation form. Click Reset first if you wish to calculate additional weights. https://www.inchcalculator.com/aquarium-tank-weight-calculator Data and formulas are from studies conducted by TPWD and other scientific groups All lengths are total lengths unless fork length (FL) or lower jaw to fork length (LJFL) is indicated. It … Click the Calculator button below and print out the take along copy and surprise your Captain and crew with the accuracy of your estimates. Albacore; Baardman; Baardman (Slender) Barracuda (Great) Barracuda (Pickhandle) Barracuda (Sawtooth) Barrracuda (Blackfin) Related Information. 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! The "long length" is the overall total length of the fish and is NOT used by this calculator. If applicable on the fish, the bill and tail are both added length that cannot be relied upon for estimating weight so scientists and sporting enthusiasts use the lower jaw as a way to be more accurate and fair in comparison estimation. Fish come in different shapes and sizes, and can vary greatly, just as humans of the same age/sex/height. Select fish and enter length in inches: Select a category.