When a fish jumps out of a non-lidded tank, which leads to the event of it committing suicide.
Jonny: did you see what Goldy just did?! she almost jumped right out of the tank!

Ken: yeah bro! Goldy just attempted fishicide!
by katphin February 7, 2012
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when your fish repeatedly slams his(or her) self against the tank wall until he(or she) manages to knock the tank off the shelf dousing the carpet with not only gravel and water but fish too!
dude last night i was sitting in my bed when randomly my beta committed fishicide...shitty.
by dakhwon March 25, 2011
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