There are ways of "not" getting a reliable gender ID, and ways of getting a very reliable one.
Other than the obvious, not posting a blurry shot, or a too small or obscured one.
Posting a shot of a fish in a position where sexual difference are not shown, will not get a reliable ID
The shot above is one of those non-ID determining shots, or the one below, is too young.
even though this male is young, he is showing an ID-able head profile, below a mature female note the difference.
With Parachromis and similar species the head profile, and spots on the jaw are important to emphasize.
Note the steep head profile, and spots on the lower jaw of the male above.
The more streamlined profile and lack of spots on the female below.
A species with similar traits below.
Male Nandopsis tetracanthus above (note head profile(, female below.
Also note the differences in colors in the dorsal and body.
For the Archocentrus/ Amatitlania /Cryptoheros types differences can be very dramatic.
Male sajica above, female below
l
Male myrnae above, female below
Geophagines also exhibit some of these traits
Male Gymnogeophagus quilero above, female below
Other than the obvious, not posting a blurry shot, or a too small or obscured one.
Posting a shot of a fish in a position where sexual difference are not shown, will not get a reliable ID
The shot above is one of those non-ID determining shots, or the one below, is too young.
even though this male is young, he is showing an ID-able head profile, below a mature female note the difference.
With Parachromis and similar species the head profile, and spots on the jaw are important to emphasize.
Note the steep head profile, and spots on the lower jaw of the male above.
The more streamlined profile and lack of spots on the female below.
A species with similar traits below.
Male Nandopsis tetracanthus above (note head profile(, female below.
Also note the differences in colors in the dorsal and body.
For the Archocentrus/ Amatitlania /Cryptoheros types differences can be very dramatic.
Male sajica above, female below
l
Male myrnae above, female below
Geophagines also exhibit some of these traits
Male Gymnogeophagus quilero above, female below
