Two Little FishiesMulti Purpose Tool

Is there something on the end of this that will hold a piece of krill or fish for feeding my aggressive crabs/fish?

Any suggestions on keeping the tubing attached to the syringe? Have tired cutting a new end and also silicon sealant. Was good for years...

whats the reach on this tool? I have a marineland 150 gallon so was wondering if it would work for me or should I try something else?

What size tubing is used for the connectors? Are replacements sold?