Strong's:ἰχθύδιον a petty fishDerivation: diminutive from G2486;KJV Usage: little (small) fish. G2486
TBESG:ἰχθύδιονlittle fishG:N-N ἰχθύδιον, -ου, τό (dimin. of ἰχθύς), a little fish: Refs Mat.15:34, Mrk.8:7.† (AS)
ἰχθύδιον ichthudion ikh-thoo'-dee-on Diminutive from G2486; a petty fishKJV Usage: little (small) fish.