shaky kribs

[forsaken]

O.K. i have 4 kribs 2male 2 female and every time they go by each other they do like this shaky motion like being twichy or something what are they doing?And only when they swim by each other.

 

[south coast nelly]

it sounds like there flirting to me.....this is what cichlids do including tug of war and general tests of strenth,,,,,head to tail wavering and then the cleaning of rocks and digging of pits....