so far my Paretroplus have spawned 3 times, mine are just slightly bigger than yours, about 4-5" TL
yeah, they're very easily distracted. and disturbed. I think the only way for these to spawn properly with parental care and all is in a speciestank in a fishroom or in a pond.
somehow in a tank with other fish and a person near the glass they just can't focus on the job.
they qualify as "blonde fish" to me; very good looking, but thick as a yard of lard
"And he piled upon the whale's white hump the sum of all the rage and hate felt by his whole race. If his chest had been a cannon, he would have shot his heart upon it"