From the Muddy Banks of the Wishkah was created in 1989.

Bleach (1989) Nevermind (1991) Incesticide (1992) In Utero (1993) Unplugged In New York (1994) From The Muddy Banks Of The Wishkah (1996) Nirvana (greatest hits album) (2002) Sliver-The Best Of The Box (2005) And then There's the box set-With The Lights Out (2004) Plus there's singles, like Lithium, and Heart-Shaped Box, theres also Hormoaning, and more, but up above are Nirvana's main records.

Nirvana topped the US Album Charts with Nevermind, In Utero, MTV Unplugged, From the Muddy Banks of the Wistah

a muddy fish

No the word muddy is not a noun at all.

The word muddy is an adjective.