Its usualy dead
The spelling is upside down, which is hyphenated upside-down when used as an adjective.
Its Dead. When it floats up and the gills are not moving and breathing for sure it is dead
Sounds like a dead or dying fish. Could be swim-bladder, extreme stress, or a gas build up.
"Upside down" has three morphemes: up (preposition), side (root word), and down (adverb).
up
There is no fixed orientation in space, so the concept of "upside down" is relative. The Earth rotates on its axis, causing day and night, but there is no absolute "up" or "down" in space.
they sleep up side down
If you're upside down then 25-up
Plants do grow better upside down, but first you have to grow them right side up.
It gobbles up!!
Simple observation. You will either see them fighting or see the damage on the fish that indicates they have been fighting.
1961 can be read the same way right side up and upside down.