Halakhah su Salmi 22:25

To not eat of the swarming creatures of the waters: To not eat of the swarming creatures of the waters, as it is stated (Leviticus 11:43), "You shall not abominate your souls with any swarming creature that swarms, and you shall not defile yourselves with them and become impure through them." And the substance of a swarming creature of the waters is well-known; that it is from the minute creatures that swim in the water - and they are called the swarming creatures of the waters. And this negative commandment is specific to them, [and] besides the negative commandment that is specific to the impure fish; as these are not included as fish at all, since they are a completely different species of its own. That is the opinion of Rambam, may his memory be blessed, (Sefer HaMitzvot LaRambam, Mitzvot Lo Taase 179), about this verse, that it comes to teach about this. But Ramban, may this memory be blessed, (on Sefer HaMitzvot, Root 9, s.v. veraiti lerav z"l) disagrees with him on this and wrote, that this negative commandment is not a specific negative commandment about any swarming creature; but rather that it is from the general negative commandments for which we do not administer lashes, like "You shall not eat any abomination" in Deuteronomy 14:3 at the beginning of the sections of the prohibited animals. And so [too,] here at the end of all of them, it stated, "You shall not abominate your souls" with all of the walkers of the ground that I have prohibited. And grouped in this was the prohibition of the impure beast, the prohibition of the impure fowl, the flying swarming creature and the swarming creature of the ground. As all the forbidden and the distanced is included in abomination, as [with] "For He did not disparage nor abominate the plea of the lowly" (Psalms 22:25). And both of them, may their memories be blessed, wrote at length about this negative commandment and involved in it that which [the Sages], may their memory be blessed, said in the Gemara [in] Makkot 16b, "If he ate a putita, he is lashed four [sets], an ant five, a wasp six." And each one explains what appears [correct to him] about the matter.