Deuteronomy 4:18

16 that you do not act corruptly and make an idol for yourselves of any form or shape, whether in the likeness of a male or female,

17 of any beast that is on the earth or bird that flies in the air,

or of any creature that crawls on the ground or fish that is in the waters below.

19 When you look to the heavens and see the sun and moon and stars—all the host of heaven—do not be enticed to bow down and worship what the LORD your God has apportioned to all the nations under heaven.

20 Yet the LORD has taken you and brought you out of the iron furnace, out of Egypt, to be the people of His inheritance, as you are today.

This was said to Israel at a particular time, so it is wise to read it together with the surrounding text. Do read the surrounding verses too, because the context often says more than a single verse.

Compare

BSB
or of any creature that crawls on the ground or fish that is in the waters below.
KJV
The likeness of any thing that creepeth on the ground, the likeness of any fish that is in the waters beneath the earth:
WEB
the likeness of anything that creeps on the ground, the likeness of any fish that is in the water under the earth;
ASV
the likeness of anything that creepeth on the ground, the likeness of any fish that is in the water under the earth;
DARBY
the pattern of anything that creepeth on the ground, the pattern of any fish that is in the waters under the earth;
BLB
the likeness of anything that creeps on the ground, or the likeness of any fish that [is] in the water beneath the earth.
ÅB
eller av noe dyr som kryper på jorden, eller av noen fisk i vannet nedenfor jorden,
OTB
eller i form av noe kryp som beveger seg på bakken eller noen fisk i vannet under.
B1930
eller av noget dyr som kryper på jorden, eller av nogen fisk i vannet nedenfor jorden,

Study notes (Tyndale)

Original text and word study