Pond Boss Forums INTRO Questions & Observations Blue Gill Identification

I think Fish 1&2 are BG both males. Fish 3 & 4 are HBG (BGXGSF) both probably males. After putting both pictures side by side and closely looking at both 3&4, fish3 is slightly lighter colored than fish4 but not enough IMO to not be a male. There will always be some color variation among mature males and I think we are seeing it here. Considering the predominance of males in the HBG population good changes are both are males. A knife would verify the sex. It is really hard for me to see if fish3 is significantly plumper and carrying eggs than fish4 or not.