found: Work cat.: 2001045955: The biology of hypogean fishes, 2001:CIP galley (hypogean: subsurface or subterranean environment, or organisms living there; mentions mainly species found in caves and some in wells; some cave fishes move in and out of caves)
found: LC database, Sept. 4, 2001(hypogean [fauna])
found: Moyle, P.B. Fishes, c1988:p. 264 (cave fishes live in freshwater and brackish water) p. 407 (at least 11 families of fishes live in caves)
found: Random House(hypogeal: underground, subterranean; also, hypogaeal, hypogeous, hypogaeous)
found: Web. 3(hypogeal or hypogeous: living below the surface of the ground; also, hypogean, hypogaean, or hypogeic)
found: McGraw-Hill dict. sci. tech.(hypogeous: living or maturing below the surface of the ground; also, hypogeal)
found: AllTheWeb search, Sept. 10, 2001(hypogean fishes)
notfound: Nelson, J.S. Fishes of the world, c1994