u/Immediate-Gap3800

I’d like to ask about farming Red Shards using the Super Rod.

I’m currently playing Pixelmon mod version 9.3.15, and I’ve been trying to fish for Red Shards in lava pools within desert/badlands biomes using a Super Rod.

However, I haven’t received any items at all—only Pokémon every time I fish.
Is this normal behavior in this version, or am I possibly doing something wrong?