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2. Aquarium fish feeder - Wikipedia

   en.wikipedia.org/wiki/Aquarium_fish_feeder

   Aquarium fish feeder. An aquarium with a fish feeder. Aquarium fish feeders are electric or electronic devices that are designed to feed aquarium fish at regular intervals. They are often used to feed fish when the aquarist is on vacation or is too busy to maintain a regular feeding schedule. [1]

3. Guppy - Wikipedia

   en.wikipedia.org/wiki/Guppy

   The size of guppies vary, but males are typically 1.5–4 cm (0.6–1.6 in) long, while females are 3–7 cm (1.2–2.8 in) long. A variety of fancy guppy strains are produced by breeders through selective breeding, characterized by different colours, patterns, shapes, and sizes of fins, such as snakeskin and grass varieties.

4. Shoaling and schooling - Wikipedia

   en.wikipedia.org/wiki/Shoaling_and_schooling

   Fish derive many benefits from shoaling behaviour including defence against predators (through better predator detection and by diluting the chance of individual capture), enhanced foraging success, and higher success in finding a mate. It is also likely that fish benefit from shoal membership through increased hydrodynamic efficiency.

5. Aquatic feeding mechanisms - Wikipedia

   en.wikipedia.org/wiki/Aquatic_feeding_mechanisms

   Aquatic feeding mechanisms. Grouper capture their prey by sucking them into their mouths. Aquatic feeding mechanisms face a special difficulty as compared to feeding on land, because the density of water is about the same as that of the prey, so the prey tends to be pushed away when the mouth is closed. This problem was first identified by ...

6. Algae eater - Wikipedia

   en.wikipedia.org/wiki/Algae_eater

   Algae eater or algivore is a common name for any bottom-dwelling or filter-feeding aquatic animal species that specialize in feeding on algae and phytoplanktons. Algae eaters are important for the fishkeeping hobby and many are commonly kept by aquarium hobbyists to improve water quality. [1] They are also important primary consumers that relay ...

7. Genetically modified fish - Wikipedia

   en.wikipedia.org/wiki/Genetically_modified_fish

   Genetically modified fish (GM fish) are organisms from the taxonomic clade which includes the classes Agnatha (jawless fish), Chondrichthyes (cartilaginous fish) and Osteichthyes (bony fish) whose genetic material (DNA) has been altered using genetic engineering techniques. In most cases, the aim is to introduce a new trait to the fish which ...