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Aquarium with LED lighting. Freshwater aquarium lighting is commonly provided by screw-in incandescent bulbs, fluorescent tubes and LED lamps.Incandescent lighting is becoming less popular because it uses much more energy and produces more heat than the other lighting types. [1]
Fish were observed floating inverted completely motionless with the illicium hanging down stiffly in a slight arch in front of the fish. The illicium was hanging over small visible burrows. It was suggested this is an effort to entice prey and an example of low-energy opportunistic foraging and predation.
Notonectidae is a cosmopolitan family of aquatic insects in the order Hemiptera, commonly called backswimmers because they swim "upside down" (inverted). They are all predators and typically range from 0.5 to 1.5 cm (0.2–0.6 in) in length. [1]
Requires a minimum 825 gallon aquarium with a 7 cm (2.7 in) deep sand bed and no rockwork. May live for 8 to 10 years in an aquarium. [70] 119 cm (46.9 in) [104] Atlantic guitarfish: Pseudobatos lentiginosus: No: Requires a minimum 200 gallon aquarium preferably with no aquascaping. Uncommon in the aquarium trade. [70] 76 cm (29.9 in) [105]
A blacklight, also called a UV-A light, Wood's lamp, or ultraviolet light, is a lamp that emits long-wave ultraviolet light and very little visible light. [ 1 ] [ 2 ] [ 3 ] One type of lamp has a violet filter material, either on the bulb or in a separate glass filter in the lamp housing, which blocks most visible light and allows through UV ...
An oscar, Astronotus ocellatus, surveys its environment. Vision is an important sensory system for most species of fish.Fish eyes are similar to the eyes of terrestrial vertebrates like birds and mammals, but have a more spherical lens.
Sharks can only drift away from objects directly in front of them because their fins do not allow them to move in the tail-first direction. [ 29 ] Unlike modern cartilaginous fish, members of stem chondrichthyan lineages (e.g. the † climatiids and the † diplacanthids ) [ 30 ] possessed pectoral dermal plates as well as dermal spines ...
A reef aquarium or reef tank is a marine aquarium that prominently displays live corals and other marine invertebrates as well as fish that play a role in maintaining the tropical coral reef environment. A reef aquarium requires appropriately intense lighting, turbulent water movement, and more stable water chemistry than fish-only marine ...
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