Happy 2021! No bad days. Bring on the joy of fish keeping with new ideas/improvements and sharing throughout the year.
Salt water. All trevally species and subspecies are saltwater. I believe there are some that migrate to freshwater to breed tho.
Also ph,gh,kh
I see a lot of people who have kept these fish in fresh water, wether they’ve had them for many years I don’t know.
My tank is light brackish.
Also ph,gh,kh
From Wikipedia:
The giant trevally inhabits a very wide range of offshore and inshore marine environments, with the species also known to tolerate the low salinity waters of estuaries and rivers. It is a semipelagic fish known to spend time throughout the water column, but is mostly demersal in nature.[22] The species is most common in shallow coastal waters in a number of environments, including coral and rocky reefs and shorefaces, lagoons, embayments, tidal flats and channels. They commonly move between reef patches, often over large expanses of deeper sand and mud bottoms between the reefs.[23][24] Older individuals tend to move to deeper seaward reefs, bomborasand drop-offs away from the protection of fringing reefs, often to depths greater than 80 m.[25][26] Large individuals, however, often return to these shallower waters as they patrol their ranges, often to hunt or reproduce.[26] In Hawaii, the juvenile to subadult giant trevally is the most common large carangid in the protected inshore waters, with all other species apparently preferring the outer, less protected reefs.[27] It is also easily attracted to artificial reefs, where studies have found it to be one of the predominant species around these structures in Taiwan.[28]
Juvenile to subadult giant trevally are known to enter and inhabit estuaries, the upper reaches of rivers and coastal lakes in several locations, including South Africa,[29] Solomon Islands,[30] Philippines,[31] India,[32] Taiwan,[33]Thailand,[34] northern Australia,[35] and Hawaii.[23] In some of these locations, such as Australia, it is a common and relatively abundant inhabitant,[30] while in others, including South Africa and Hawaii, it is much rarer in estuaries.[23] The species has a wide salinity tolerance, as evident from the ranges from which juvenile and subadult fish in South African estuaries have been recorded; 0.5 to 38 parts per thousand (ppt),[36] with other studies also showing tolerance levels of less than 1 ppt.[29] In these estuaries, the giant trevally is known from both highly turbid, dirty water to clean, high visibility waters, but in most cases, the species prefers the turbid waters.[23]Younger fish apparently actively seek out these turbid waters, and when no estuaries are present, they live in the turbid inshore waters of bays and beaches. These young fish eventually move to inshore reefs as they mature, before again moving to deeper outer reefs.[27]
In the Philippines, a population of giant trevally inhabit (and were once common in) the landlocked fresh waters of the formerly saltwater Taal Lake, and are referred to as maliputo to distinguish them from the marine variant (locally named talakitok). Along with Taal Volcano and Taal Lake, the maliputo is prominently featured on the reverse side of the newly redesigned Philippine 50 peso bill.[37]
Yes, time to start another project as I stated. The dorados are all fine and rehomed to a friend.
Pellet train early. This will ensure manageable water quality as they grow and need to eat more.
Weekly 50% water change. No gravel vac. No hands in the tank. No turning off of bio filter. Hose off mechanical filter.
Everyone is happy.
Everyone is happy.
These guys like high flow with lots of surface agitation.
I lowered the water level 1" creating lots of mirco bubbles. I also dialed back the mechanical filter from 6psi to 5psi. This allowed a higher flow rate through the bio filter and back to the tank. They are definitely more active as a result.
I lowered the water level 1" creating lots of mirco bubbles. I also dialed back the mechanical filter from 6psi to 5psi. This allowed a higher flow rate through the bio filter and back to the tank. They are definitely more active as a result.
