Male greenling at Shizugawa bay

Male greenling at Shizugawa bay

MINAMISANRIKU, Japan - A male greenling whose scales have taken on golden coloration protects eggs beneath it at a depth of about 13 meters in Shizugawa Bay in the Pacific Ocean off Miyagi Prefecture, northeastern Japan, on Dec. 1, 2010.

Male greenling at Shizugawa bay

Male greenling at Shizugawa bay

MINAMISANRIKU, Japan - A male greenling whose scales have taken on a golden color chases another fish as it protects eggs beneath it at a depth of about 13 meters in Shizugawa Bay in the Pacific Ocean off Miyagi Prefecture, on Dec. 1, 2010.

Male greenling at Shizugawa bay

Male greenling at Shizugawa bay

MINAMISANRIKU, Japan - A male greenling whose scales have turned from brown to gold protects eggs laid on rocks and seaweed beneath it at a depth of about 5 meters in Shizugawa Bay in the Pacific Ocean off Miyagi Prefecture, northeastern Japan, on Dec. 1, 2010.

Male greenling at Shizugawa bay

Male greenling at Shizugawa bay

MINAMISANRIKU, Japan - A male greenling whose scales have taken on a golden color chases another fish as it protects eggs beneath it at a depth of about 13 meters in Shizugawa Bay in the Pacific Ocean off Miyagi Prefecture, on Dec. 1, 2010. (Kyodo)

Male greenling at Shizugawa bay

Male greenling at Shizugawa bay

MINAMISANRIKU, Japan - A male greenling whose scales have turned from brown to gold protects eggs laid on rocks and seaweed beneath it at a depth of about 5 meters in Shizugawa Bay in the Pacific Ocean off Miyagi Prefecture, northeastern Japan, on Dec. 1, 2010. (Kyodo)

Male greenling at Shizugawa bay

Male greenling at Shizugawa bay

MINAMISANRIKU, Japan - A male greenling whose scales have taken on golden coloration protects eggs beneath it at a depth of about 13 meters in Shizugawa Bay in the Pacific Ocean off Miyagi Prefecture, northeastern Japan, on Dec. 1, 2010. (Kyodo)