Jan writes:
Different groups of leeches have different food habits. The Piscioloidae
are parasitic on fish and crustaceans; the Glossiphoniidae are mostly
carnivorous (some particularly so on snails) but some are parasites (or
"micro-predators") on fishes, frogs, and turtles. Pennak's chapter on
leeches in "Fresh-water Invertebrates of the United States" is excellent; he
devotes four paragraphs to the maintenance of leeches in captivity including
aquarium set-up, prey, frequiency of feeding.
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