Physical properties include: appearance, texture, color, boiling point, melting point, ect.
3.gases- <span> Their molecules are already the farthest apart compared with solids and liquids, and small changes in temperature causes these loose molecules.</span>
Well, human bodies differ from all those animals.
Well depends on what type of fish the parent is but i guess you can say:
what they eat
teeth
instincts
color
venom
blending in,etc