Axolotls can't be bred with raw tropical fish

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What I expected to happen was...: The axolotls would breed when I gave them Tropical Fish
Describe what you thought should happen here

What actually happened was...: They only breed when i give them Buckets of Tropical Fish
Describe what happened here

Steps to Reproduce: try to breed them with the raw tropical fish
1. Put a step by step guide on how to trigger the bug here
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