George Leo Haydock, on Tob 6:2

“And he went out to wash his feet, and behold a monstrous fish came up to devour him.”

“Feet. Greek, “to bathe.” — Fish. The learned are of opinion that this was the fish which Pliny calls callyonymus, ([Natural History?] l. xxii. ch. 7.) the gall of which is of sovereign virtue to remove white specks that grow over the eyes. (Challoner) — Other fishes have the like virtue; and as the aforesaid has no scales, and is not above a foot long, it could not be lawfully eaten by the Israelites, nor could it suffice for ten days’ provision, ver. 6. (Leviticus xi. 10.) Others, therefore, prefer (Calmet) the sea-calf, (Brado) the hippopotamus, (Grotius) the crocodile, (Denis the Carthusian) whale, (Theophylactus) sturgeon, or silurus. (Bochart, Anim. iv. 15.) — But there are great difficulties with respect to all these; and Fran. George adopts the sentiment of the Rabbins in favour of the pike, which seems the least objectionable, as it has scales, gills, and cannot live long out of water, ver. 4. It grows to a great size in the Tigris, and its gall is good for the eyes. (Calmet)”

Imported from an open dataset — not yet checked against the printed edition.