Two independent classifications appear here:
1. Creatures without flowing blood, exemplified by flies and scorpions.
2. Creatures that normally live in water, exemplified by fish, frogs and crabs.
The first turns on the nature of blood; the second turns on the creature’s natural aquatic habitat. They should not be treated as identical categories.
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Impurity in Stagnant and Running Water, Large Ponds, and Aquatic Creatures
Two independent classifications appear here:
1. Creatures without flowing blood, exemplified by flies and scorpions.
2. Creatures that normally live in water, exemplified by fish, frogs and crabs.
The first turns on the nature of blood; the second turns on the creature’s natural aquatic habitat. They should not be treated as identical categories.