2 adjectives to describe sticklebacks

As he was sitting one evening at the door of his house, bending about his lithe arms in the way he was wont, two itinerant Sticklebacks chanced to pass that way.

On the ninth, three fine Sticklebacks and three Minnows were made free of the mimic ocean; and on the tenth, an Eel and two Prawns.

2 adjectives to describe  sticklebacks