SH feeding pattern question

Crono

Black Skirt Tetra
MFK Member
Jun 15, 2022
49
10
13
Looking about SH often feed, I read most feeds every 2/3 days a week. even the seller who sell snakehead who I buy from also instructs feed 3x/week.
is there a reason why comparing to other fish that feed everyday? bichir, gar, and other fishes.
I spot that if juvenile, daily. if adult(above 8"?), 2/3 /week. Does the rule also apply to other adults fish?
does small/big portion effect the gap? ex. small amount, can once/everyday

average fish size in tank of mine ~10cm/4", include SH
 
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