Do they have discounts or anything like that

They do have a military discount. This month only (usually one month a year) is free entrance with a VA Zoo membership.

As mentioned above usually no discounts unless you are a senior citizen. You could also get a membership and that could save money if you visit the place more often.

If you have a zoo membership it is free to get into the aquarium just for this month.

If you are a senior you get a discount

Maybe. It's worth a try. I'd try military, AAA, or other attraction memberships. They might do reciprical admission with another zoo or aquarium membership.

I didn't see any discounts or anything so I just paid for regular price for 3 kids and 3 adults I played 124