Questions with the keyword 'fish'

• Why can sea fish only live in salty water? by chrisb Comments: (So far, one comment )
• Why are tropical fish so colourful compared to fresh water fish? by chrisb Comments: (No comments so far )
• How come bull sharks can live in both salt and freshwater? by chrisb Comments: (No comments so far )
• How can science help me to create a great fish pond in my garden? by chrisb Comments: (No comments so far )