Myths about Aquaculture

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Today, I picked up a few grocery items at the supermarket (I should mention I took notice of the Tilapia filets in the freezer section while shopping, which was a first), but when checking out, the issue arose I was back in college. I've known Pat for around 20 years, and she asks, "You're back in college?" "Yes," I replied, "I'm going there for Aquaculture." "Did you say Agriculture?," with a little...

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Largemouth Bass, Bluegill and Other Sunfishes

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Notes from Fundamentals of Aquaculture, James W. Avault, Jr., Ph.D., pgs. 84-85Carnivorous largemouth bass is farmed commercially in Taiwan on a limited scale, this species is mainly sought for sport in areas it occurs naturally, or has been introduced. Largemouth bass has wide distribution range, from Southern Canada, the Great Lakes, south into Mexico, and on the Atlantic Coast from Virginia to Florida. The Florida strain is sought after because it grows faster and reaches a large size, making...

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Largemouth Bass Culture

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Largemouth Bass, Micropterus salmoidesLargemouth bass are freshwater bass which belong to the family Centrarchidae.Two subspecies:1. Northern strain2. Florida strain (Rook.org) Scientists and anglers had already recognized by 1932 that largemouth bass in peninsular Florida grew to a larger size and had different coloration than their northern counterparts. These differences, as well as other physical...

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Largemouth Bass, Micropterus salmoides

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Largemouth Bass, Micropterus salmoidesImage based on (Texas State Wildlife)Physical Description and TaxonomyMicropterus, from the Greek, "small fin" salmoides, from the Latin, salmo, "trout"; hence "trout-like" Common name from large mouth, the line of which extends back past the eye. Other common names include: Bigmouth Bass, Bigmouth Trout, Black Bass, Bucketmouth Bass, Green Bass, Green Trout,...

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Which Fish Do Fast Food Restaurants Use?

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McDonalds' Fish Filet SandwichThe Filet-O-Fish is a fish sandwich sold by McDonald's since 1963. It contains a breaded fish patty made from Pollock or Hoki.Source, 1 and 2Alaska pollock is commonly used in the fast food industry, for example the fish filet at both McDonald's and Burger King are also made from Alaska pollock.The Alaskan pollock is said to be "the largest remaining source of palatable fish in the world." Atlantic pollock is largely considered to be a white fish, although it is a fairly...

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Rainbow Trout, Salmo gairdneri

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Rainbow Trout, Salmo gairdneri (=Oncorhynchus mykiss)(Salmon Trout, Steelhead Trout, or Coastal Rainbow Trout)Physical Description and TaxonomyClass: OsteichthyesOrder: SalmoniformesFamily: SalmonidaeGenus: OncorhynchusSpecies: mykissIn 1992 the steelhead trout, Salmo gairdneri (the species named in memory of Meredith Gairdner, a 19th-century naturalist) was reclassified in the genus Oncorhynchus...

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Brook Trout, Salvelinus fontinalis

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Brook Trout Salvelinus fontinalis(Speckled trout)Salvelinus fontinalis (Mitchill, 1814)Taxonomy and NomenclatureTaxonomic HierarchyKingdom Animalia -- Animal, animals, animauxPhylum Chordata -- chordates, cordado, cordésSubphylum Vertebrata -- vertebrado, vertebrates, vertébrésSuperclass Osteichthyes -- bony fishes, osteíceto, peixe ósseo, poissons osseuxClass Actinopterygii -- poisson épineux, poissons...

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Effects of High and Low pH Levels in Water on Fish

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Effects of pH Levels on Aquatic organismsVery high ( greater than 9.5) or very low (less than 4.5) pH values are unsuitable for most aquatic organisms. Young fish and immature stages of aquatic insects are extremely sensitive to pH levels below 5 and may die at these low pH values. High pH levels (9-14) can harm fish by denaturing cellular membranes.Changes in pH can also affect aquatic life indirectly...

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Koi, Japanese Carp

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These are beautiful little fish. When I walk up to their tank they're scattered around in it, but soon conglomerate at the edge, mouths wide open, thinking they're going to get fed. Some jump out of the water, into the air (some snapshots below)... they're very active little fish, which makes them very difficult to photograph.The word "koi" comes from Japanese. The original Japanese word koi simply...

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Constructing a CO2 Reactor

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Fig. 1 [(+/-)] CO2 reactors are used to deliver bubbles of carbon dioxide (carbonic acid) to plants growing inside an aquarium.Fig. 2 [(+/-)] Plants thriving inside fully aquatic environment.Fig. 3 [(+/-)] Pressure built up inside the CO2 Reactor pushes the gas through the small plastic tube and into the tank for circulation. A small air stone is attached at the end of the tube (see figure 13). For...

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Fish Anatomy

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Fish Anatomy1000 pixels widthFish Anatomy1000 pixels widthFish Anatomy1000 pixels widthFish Anatomy - Gills1500 pixels widtha. general features of a spiny-rayed fishb. adipose fin showing its location on caudal peduncle when presentc, canine teeth on jawbone (dentary) of a yellow pikeperch (Stizostedion)d. method of counting the number of principle dorsal fin rays in soft-rayed forms such as minnows,...

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Catfish Production in the Hatchery

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Catfish hatcheries are typically, but not always, indoors. Usually a simple pole barn or block building will suffice and elaborate structures are unnecessary. Egg hatching troughs are made of aluminum or fiberglass, and measures 12" deep, 22" wide and 8-10' in length.Channel Catfish EggsThe trough is usually mounted, and stand about waist high. Each egg trough is outfitted with 1/4" hardware cloth...

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