channa marulius marulioides

Please help me identify the sex of my channa marulioides:help2: Its very confusing seeing videos online with the distance and number of holes below the belly etc. Thanks

This is my snakehead in a 1000 gallon aquarium.

Is my count correct? 13 predorsal scales? 7 preopercular scales? I'm not sure I get from where to where to count.. 46 dorsal fin rays 30 anal fin rays at the 17'th or 18'th scale, the lateral line drops and has 48 scales I total, not totally sure here... from...