Millimeters may be appropriate, or perhaps centimeters. If a fish is 63 mm long, then it would be 6.3 cm long. U have to take the fish out of the aquarium
Millimetre.
a millimeter
Time
meeters?
The meter.
Cm .
A kilometre.
Centimeters
Centimeters
Time
meeters?
a millimeter
Millimetre.
the metric system
Milligrams
Inches, millimetres or centimetres.
Kilometres