Nice catches by your son, tell him well done.
How big were the Gar's ? I used to keep a couple in a tank, got them at about 8 inches and watched them grow to 20 and 28 inches respectively.
Not that much of a problem to handle, teeth are sharp but little biting power, or to look at it another way, blood but no missing bits
I sold them on to shop when a house move meant no more 10 foot fish tanks
At the same time I also had a Snakehead, an Arowana along with an Amazon Red Tailed cat, the Snakehead was always the problem.
It would destroy any in tanks fittings and was quite capable of removing fingers at will, at about 30 inches I had had enough and donated it to
mate with a large fish house, it became his refuse disposal unit, any dead, dying or unwanted stock disappeared down the hatch within minutes of being put in it's tank.
Neil.