My little guy never hissed but he did strike at me once a few weeks after I got him. I moved him from a 20 gallon tank to a 15qt tub. He calmed down a lot, and now is totally fine and calm when I handle him.
I should probably note that I also now very rarely pick him up if he's in one of his hides. I open the tub and only take him out if he starts climbing out on his own. He normally comes out of his hide on his own after I take his lid off. If he doesn't, I leave him alone, check his environment stats, adjust if necessary, and leave him alone. He seems a lot more comfortable with this combination of changes.
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