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Do Fish Pee? Pets on Mom. com

do fish pee pets on mom com
Other fish, just like the South American electric powered fishes Gymnotiformes, can produce weak electric currents, which they use in navigation and social verbal exchange. Vision is an important sensory system for most species of fish. Fish eyes are similar to those of terrestrial vertebrates like birds and mammals, but have a more spherical lens. Their retinas generally have both rods and cones for scotopic and photopic vision, and most species have colour vision. Some fish can see ultraviolet and a few can see polarized light. Amongst jawless fish, the lamprey has well constructed eyes, while the hagfish has only primitive eyespots.