'A tank with a large surface increases the supply of D.O., dissolved this, which fish take from the water'
oxygen
PETS: A tank with a large surface increases the supply of D.O., dissolved this, which fish take from the water
A tank with a large surface increases the supply of D.O., dissolved this, which fish take from the water
A tank with a large surface increases the supply of D.O., dissolved this, which fish take from the water
PETS
oxygen
PETS