Add all the prices together:
3.50 + 10.00 + 9.95 + 6.25 = 29.70
He has 30, so he had 30 - 29.70 = 0.30 left over for fish.
The two fish cost 4.50 + 4.50 = 9.00
He would need 9.00 - 0.30 = $8.70 more money
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