What is this piece called?

[silent1mezzo]

I have a Jebao 3500 I use for water changes and I recently broke off the connector that connects the hose to the pump. I've got the larger diameter one available but I can't figure out the name of this part to even begin searching.

The one on the right is the broken piece that fits a 3/4" inner diameter hose. One on the left is 1" ID

 

[twentyleagues]

Hose adaptor or hose barb. You should have hard plumbing adaptors also you could do a piece of pipe to a barb to hose. Parts for those should be available from most big box hardware stores.