Possible Clues:

• Direct deposit abbr.
• Even with one little foot, 'e is all right in the water
• If it's under fifty it's left
• Amphibian went aw ay, lake having vanished
• Red ___ (young amphibian)
• Most of what's left in the water
• Small amphibian first to leave port
• Left at last in the water
• One of the 15 down to be abandoned after half a century
• Tiny wriggler