VENT
1. n. The uro-genital opening of fish, located between the anus and the anal fin. Also referred to as the genital papilla. 2. v. To determine a fish's gender by examining the genital papillae.
VENTRAL FINS
Paired fins on the lower part of the fish, located below the gill covers. Not all fish have these.
VENTURI
A valve which makes bubbles by drawing air into fast flowing water. Especially useful in protein skimmers.
VHO LIGHTS (VHO)
Very High Output: florescent bulbs with a much higher output than NO bulbs, they require special ballast and end caps, mostly used on freshwater plant tanks or marine reef tanks.
VITAMINS
Any micro-nutrients needed for continued good health of an organism. Many products are sold for specific animals.
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