SAGINAW, MI—Executives at Poseidon Aquatic Enclosures announced Monday the launch of a new line of made-to-order fish tanks that can be outfitted with customers' individual vision prescriptions. "How many times have you misplaced your eyeglasses yet still wanted to look at your fish?" company spokesperson Ian Barnes said of the new corrective tanks, which are available in sizes up to 100 gallons. "Never again with the new IchthyOptic System. Whether you have a slight astigmatism or need a bifocal tank to simultaneously look at your tiny gobies and large plecostomus, Poseidon can provide you with a crystal-clear fish-viewing solution." Barnes said the company is also developing a line of fish tanks that will incorporate Transitions-brand automatic tinting technology, which will eliminate glare when looking at fish outside on sunny days.