Great Article On Gsp Keeping Imo

[phlawed]

http/www.wetwebmedia.com/BrackishSubWebIndex/gspsart.htm

 

[AMS]

I suggest keeping GSPs at low-end BW when juvenile <2", (in a specific gravity, or SG of 1.005-08), at 2-4", medium BW (SG 1.010-15) and adult >4" SW (SG 1.018-22).

That line is helpful, but it was always my understanding that they should at least be in a SG of 1.010 at 2 inches.

 

[ac106]

I suggest keeping GSPs at low-end BW when juvenile <2", (in a specific gravity, or SG of 1.005-08), at 2-4", medium BW (SG 1.010-15) and adult >4" SW (SG 1.018-22).

That line is helpful, but it was always my understanding that they should at least be in a SG of 1.010 at 2 inches.

I do not claim to be an expert on puffers or brackish fish.

I have read over and over that GSPs have to be kept in increasing saltier water as they age.

Aren’t they estuary fish? Wouldn’t this mean they are used to varying salinity?

Fishbase notes that they inhabit estuaries, slow moving rivers and upper reaches of back and never mentions marine conditions.

I have no doubt they can live in marine water (as I have seen this) but do that NEED it? Has there been evidence that they have shorter or more unhealthy lives if kept at 1/2 strength seawater instead of full marine?

I wonder if this is something that has been said so many times, it’s accepted as fact.