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Fish dads with ‘Napoleon complex’ act tough

Among hardy little fish from central Australia, smaller males overcompensate for their size with extra aggression.

“We found the aggression of males was not affected by the presence of females and perceived mating opportunities or larger male intruders. Instead their aggression was related to their size,” says Bob Wong, senior lecturer at Monash University.

“The only hope for a small male may be that an intruder would then leave, without a fight,” says study leader Andreas Svensson.

Full story at Futurity.

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Photo credit: P. Andreas Svensson

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