Question about Trawl Nets and Biomes

[∞-dissolve-∞]

Hello, fellow anglers,
I come to you today with a question about Trawl Nets.
I've got the Tier 4 hull, equipped with a Versatile Rod, and Fathomless Winch, this gives me access to the following biomes:

-Coastal
-Shallow
-Mangrove
-Volcanic

^ Via the Rod ^
v Via the Reel v

-Abyssal
-Hadal
-Oceanic

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So I'm trying to get the optimal setup to fish all biomes, and to trawl all biomes.
I notice that the tier 3 nets give either:

-Mangrove / Shallow
or
-Volcanic / Coastal

But the tier 4 net gives only Coastal and Shallow. I assumed the final tier, tier 5's net, would give all of them, but it only gives Coastal and Oceanic. It's also much larger than the tier 3 nets, so why does it only have the two 'basic' zones on it?

Main question:
Does Trawling via nets depend upon the total number of accessible biomes available (noted on 'Catchable fish types' in the cargo menu), or do the nets have to specifically say the region on the net, to get trawled fish from that net?
If so, why does the 'best' net only have Coastal and Oceanic?

Thanks!

[morbosfist]

Trawling catches what the net specifies. It's distinct from fishing equipment. It's worth noting there are very few trawl-specific catches. Maybe two plus aberrants. Everything else can be fished up. Unless you're going for the achievement, it's not going to net much more than you would fishing up mid-sized fish.

[James.greywolf]

The only trawl that is of any importance is the oceanic. That is the only way you can catch anchovies (and the anchovy king). I suggest you circle trawl in D8-E8 for anchovies. Best when the depth is in the 30-40 meters range. Deeper than that, you will get prawns (those you can get with pots SE of Stellar Basin -- try the s in Basin on the map), Other than that, use the 2X2 trawls that help in the area you are working

[∞-dissolve-∞]

Ah, excellent. That answers my question perfectly.
Thank you both for the great info.
Now if you'll excuse me as I gather my things and head back to the ship, as landlubber I shall never be.
Winds be at yer backs!

[James.greywolf]

Just to make sure I got my position correct, I entered an old game, put on the oceanic trawler, sailed out to the center East point of the D8 square (depth was 38,9 m), spun around for a few minutes (a couple of hours, game time) and picked up 3 anchovies, 2 of which were kings.