| Valenciennea |
marine sleeper gobies, Family Gobidae, that feed by
taking substrate material into the mouth and extracting benethic microinvertebrates |
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| Vallisneria |
ellgrass, freshwater temperate, tropical, and subtropical flowering
plants with long, straplike leaves, many species of which are cultivated
in aquariums |
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| Variegated |
having leaves of more than one color, usually green and white |
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| Vegetarian |
an organism whose diet contains no animal matter |
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| Ventral |
the lower surface of a fish |
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| Ventral fin |
an alternative name for the pelvic fin, or most posterior paired
appendage of fish |
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| Venturi |
a device for injecting gas into a stream of water, consisting of
a specially milled pipe that creates a pressure drop near an orifice,
resulting in the intake of gas through that orifice |
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| Verrucae |
small bumps or raised areas on the column of an anemone, useful
for identification |
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| Vertebrate |
an animal with a segmented, bony or cartilaginous spinal column,
including fish, amphibians, reptiles, birds, and mammals |
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| Vesicle |
a fluid-filled sac surrounded by tissue or a membrane |
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| Vesicularia |
java moss, V. dubeyana, an aquatic bryophyte maintained in freshwater
aquariums |
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| Vibrio |
a gram-negative, curved, rod-shaped bacteria responsible for various
pathogenic conditions in fish, amphibians, and other organisms |
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| Viscera |
the internal organs of an animal |
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| Viviparous |
giving birth to living young |
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| Volute |
the "head" of a water pump, with inlet and outlet openings,
through which water is propelled by the movement of the impeller |
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| Vomer |
a portion of the skull of teleost fish, sometimes bearing teeth,
the structure of which is useful in taxonomy |
