- Joined
- Dec 28, 2016
- Messages
- 22,955
- Reaction score
- 22,055
I don't have research to back it up, but my feeling is that many fish have internal parasites, but are able to manage it without symptoms. Those symptoms show up under stress. In some cases, when those stressors get under control, the symptoms subside because the fish goes back to its prior condition, of having parasites, but managing it.
So is a fish with a "manageable" parasite load healthier than a fish that gets treated for parasites, but has to get it's gut biome built back up?
Its interesting - if you look the research - netting a fish, putting it in a new tank, etc all cause 'stress hormone' release - and these are associated with a temporary decrease in immune function. Having said that - there is a difference between 'scientific significance' and 'clinical significance'. As far as I know there is nothing to show that the differences shown would (especially) allow internal parasites to 'take hold'.
I continue to think that some here overestimate the numbers or parasites in the fish that are being delivered - especially intestinal parasites but CI/Velvet, etc. If this weren't the case - how do 80 percent of reefers avoid wiping out their tank everytime they buy a fish? Note this is not a pro or anti quarantine/treatment comment - its common sense?