Increase one ability score by 1 and a different ability score by 2 

You are humanoid

You can see in dim light within 120 feet of you as if it were bright light and in darkness as if it were dim light. You can’t discern color in darkness, only shades of gray.

Your fanged maw is a natural weapon, which you can use to make unarmed strikes. If you hit with it, you can deal piercing damage equal to 1d8 + your Strength modifier, instead of the bludgeoning damage normal for an unarmed strike.

You have tough, scaly skin. When you aren’t wearing armor, your AC is 13 + your Dexterity modifier. You can use your natural armor to determine your AC if the armor you wear would leave you with a lower AC. A shield’s benefits apply as normal while you use your natural armor.

You can breathe air and water, but you need to be submerged at least once every 4 hours to avoid suffocating.

You have proficiency in the survival skill

In battle, you can throw yourself into a vicious feeding frenzy. As a bonus action, you can make a special attack with your bite. If the attack hits, it deals its normal damage, and you gain temporary hit points (minimum of 1) equal to your Constitution modifier. You can use this trait a number of times equal to your proficiency bonus, and you regain all expended uses when you finish a long rest.

You have disadvantage on attack rolls and on Wisdom (Perception) checks that rely on sight when you, the target of your attack, or whatever you are trying to perceive is in direct sunlight.

You can speak, read and write Common and Aquan