It's funny... Yesterday i took a look at the conductivity and the result was around 70us...
Great
What are the pros and cons of wild or farmed one ?
I am a bit confused about that...
Farmed = CB = Captive Bred
Wild = WC = Wild Caught
Wild-caught fish have been taken from their natural habitat, while captive-bred covers any fish bred in captivity, whether that be in a fish farm or a fish tank.
https://www.planetcatfish.com/shanesworld/shanesworld.php?article_id=555WC fish:
POSITIVE: WC fish provide the benefit that the specimens you buy will probably not be very closely related to each other, therefore offering you more diverse genetic stock; this is a strong "plus" when considering the health of fry.
POSITIVE: Since they are wild, you can be confident that the body characters and color patterns they possess are representative of the natural species, as opposed to some manipulated shape or color morph created by humans using selective breeding.
NEGATIVE: WC fish run the highest risk of being infected with any number of parasites or pathogens (both familiar and exotic), and their health history is completely unknown, so you have big negative wild cards there.
NEGATIVE: WC fish may require more attention and effort from the fish keeper to help them adapt to captive conditions (e.g., water quality, foods offered, water change routines) and may be more likely to die without the extra care.
NEGATIVE: For some species, wild populations are under strong environmental pressures for survival (primarily habitat loss and degradation and in rarer cases also over exploitation). Purchasing WC fish creates the demand for additional collecting, thus further stressing wild populations. (On the other hand, there are also positives to this in terms of preserving local populations tied to the economies where the fish are collected).
NEGATIVE: WC fish are often misidentified by exporters, importers and retailers, meaning you may not get the fish you want. That said, many hobbyists regard this as a POSITIVE because it also means many WC imports will contain "contaminants" of other species mixed together, and the hobbyist can search for unusual or rare species among the more mundane imports.
CB fish:
POSITIVE: CB fish, if obtained by well managed breeding colonies, come from parents that are well cared for, and thus the offspring you buy are less likely to be disease or parasite-infected (at least with respect to more exotic pathogens; Ich and other common aquarium diseases are still be a concern). Unfortunately, this benefit can easily be lost because CB fish are typically mixed with WC fish during the wholesaling and importing process, exposing CB fish to many other diseases.
POSITIVE: CB fish are often also less expensive to buy than WC fish, because you don't have to pay for as many middlemen in the supply chain; also, if the fish are healthy, then sellers don't incur as much incidental loss along the path from breeder to retailer, and this helps keeps the price down. This is also more planet-friendly as fewer airmiles may be required to deliver fish to stores.
POSITIVE: CB fish are usually much better adapted to the types of water conditions found in home aquaria, and readily take prepared foods. This is not universally true, but would be species-specific.
POSITIVE: One more positive is that by purchasing CB fish, you are reducing the demand for the harvesting of wild fish in their native habitats, which may help their natural populations (but this is debatable, and I won't get into it here).
POSITIVE: CB fish are more likely to be positively identified (except see below about the potential for interspecific hybrids).
NEGATIVE: When buying CB fish, especially if you are buying a group of fish from a single source, you must consider the matter of genetic diversity within your group and the possibility that the fish you buy are inbred.
NEGATIVE: This raises the possibility that your genetically homogenous fish may not have bodies/colours representative of wild fish, and
NEGATIVE: It raises the risk of genetic defects in future generations, if your fish spawn.
NEGATIVE: When not properly managed, breeder stock at large commercial fish farms can be contaminated with multiple species of fish; as a result, the farms may be selling interspecific hybrids under the names of well-known species.
For me personally WC is a better choice