Experiment involves cat finding fish (7)

I believe the answer is:

teleost

'fish' is the definition.
(teleost is a kind of fish)

'experiment involves cat' is the wordplay.
'experiment' becomes 'test' (test is a kind of experiment).
'involves' indicates putting letters inside.
'cat' becomes 'leo' ('lion' in Latin).
'test' going around 'leo' is 'TELEOST'.

'finding' is the link.

(Another definition for teleost that I've seen is " Bony fish such as herring or carp".)

I've seen this clue in The Times.

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