Though Albert's dad never appears in the novel in person, Albert talks about him on several occasions. He's an inventor, though it's not clear what he's trying to invent. He named Albert after Albert Einstein in the hope that Albert would want to follow in Einstein's footsteps as well as his own to become a scientist or inventor.
Albert's Dad Character Timeline in Fish in a Tree
The timeline below shows where the character Albert's Dad appears in Fish in a Tree. The colored dots and icons indicate which themes are associated with that appearance.
Chapter 17: Misfit Lunch
Chapter 50: A Hero's Job
...for his friends. Keisha compliments Albert on his strength and bravery, and Albert says that Albert's dad speaks against violence but also says it's wrong to hit girls. Albert stops and says... (full context)