Scientists say they may have discovered a new species that they nicknamed “cocoa frog.” (Stuart V. Nielsen/Associated Press)

Six frogs and 11 fish found in the South American country of Suriname may be new species, a conservation group said recently.

Trond Larsen, with Conservation International, said that the team catalogued creatures and studied freshwater resources during a three-week expedition in the rain forest of southeast Suriname. The area is among the world’s least explored rain forests, the Arlington-based group said.

The creatures that may be new to science include a brown tree frog, nicknamed the “cocoa frog,” and a poison dart frog.

“Given the rate at which so many populations of frogs are declining and disappearing around the world, it’s pretty exciting to be discovering new species,” Larsen said.

Scientists also found a possibly new type of colorful tetra fish, an unusually colored catfish and nine other types of fish. The team collected data on 1,378 species of plants, birds, mammals, insects, fish and amphibians.

Associated Press