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Underwater camouflage. Underwater camouflage is the set of methods of achieving crypsis —avoidance of observation—that allows otherwise visible aquatic organisms to remain unnoticed by other organisms such as predators or prey. Camouflage in large bodies of water differs markedly from camouflage on land. The environment is essentially the ...
Tetra is the common name of many small freshwater characiform fishes. Tetras come from Africa, Central America, and South America, belonging to the biological family Characidae and to its former subfamilies Alestidae (the "African tetras") and Lebiasinidae. The Characidae are distinguished from other fish by the presence of a small adipose fin ...
The deimatic display (a rapid change to black and white with dark 'eyespots' and contour, and spreading of the body and fins) is used to startle small fish that are unlikely to prey on the cuttlefish, but use the flamboyant display towards larger, more dangerous fish, [65] and give no display at all to chemosensory predators such as crabs and ...
Pristella maxillaris is a small, adaptable fish that is often kept in a home aquarium and will eat most fish foods. It is tolerant of a range of water chemistry values (pH 6–8; hardness up to 20 dGH). As a shoaling species, it is usually kept in groups of at least six specimens and away from aggressive or predatory tankmates, but is otherwise ...
The body of the adult short-finned eel is long and snakelike, roughly tubular and the head is small, with the jaws reaching back to below the eye or further. The dorsal (top) and anal (bottom) fins are of roughly equal length. The colour varies considerably from one individual to another; a deep olive-green is typical but it can be much lighter ...
Four-striped Damselfish typically grow to about three or four inches. The less common species name is Dascyllus melanurus. They are also omnivores, eating anything ranging from algae to small fish or shrimp. Three alternating black and white vertical bands make up the body coloration with a fourth black band ending at the tail.
Hypoplectrus nigricans, the black hamlet, is a species of marine ray-finned fish, a sea bass from the subfamily Serraninae which is part of the family Serranidae, which also includes the groupers and anthias. It is native to shallow parts of the central Western Atlantic Ocean and Caribbean Sea. [3] It grows to about 15 cm (6 in) in total length.
The schooling bannerfish is a small fish that can reach a maximum length of 18–21 cm. [2][3] Its body is compressed laterally, and the first rays of its dorsal fin stretch in a long white filament. Its background color is white with two large black diagonal bands. Beyond the second black stripe, the dorsal, caudal fins and pectoral fins are ...
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