A Brisbane snake catcher has captured a monstrous find, a giant red-bellied black snake measuring 1.8m long.

Snake catcher Bryce Lockett said he was surprised by the size of the venomous reptile, which was unusually thick, nicknaming it “Chonk”.

Lockett said it was found at a rifle shooting range after it slithered out of a creek system where fish and frogs had kept it well-fed.

Camera Icon Bryce Lockett with the 1.8m red-bellied black snake he named Chonk. Credit: Facebook / Snake Catchers Brisbane, Ipswich, Logan and Gold Coast

“Every now and again they pop up,” Lockett told Reuters.

“I named him Chonk just because he was very fat and healthy.”

A snap of the snake was sharked on the “Snake Catchers Brisbane, Ipswich, Logan and Gold Coast” Facebook page, drawing more than 1500 comments.

“OMG, my favourite snake. What a beautiful, beautiful snake,” Sandy Belanich said.

Ben Cameron said: “That's a beautiful specimen. He has thrived and been lucky to reach that size. I love reds....they are a magnificent creature.”

Snakes have begun emerging from hibernation as spring ushers in warmer weather.