Servofish are the fish native to Orb Vallis on Venus. You’ll need to spear a good few Servofish of various rarities for both manufacturing purposes and to complete weekly missions, so knowing where the rarest of these mechanical marvels lurk is a good idea.

Preperation

Rare Servofishcanbe caught just by standing next to a hotspot in a body of water (or sludge as it more aptly resembles) but you’ll be a much happier camper if you do some prep work first.

The Businessin Fortuna sells various types of baits that can be used athotspotsin Orb Vallis to attract certain types of Servofish. There are three types of rare Servofish to go after:

Screenshot by Pro Game Guides

The easiest one to quickly farm is theTromozyn Servofish. They are available for longer periods of time and more often than the other two.

Luminous Dyeor anOxylussentinel with aScan Aquatic Lifeformsmod are both fantastic for fishing. Both will highlight fish to make them easily noticeable.

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Luminous Dye can be obtained for100 standingfromHai-Lukon Cetus. It’s cheap but is consumable and temporary. Making an Oxylus sentinel requires rank five with Solaris United and20,000 standingto purchase the blueprint fromThe Businessin Fortuna but is permanent.

AShockprod Fishing SpearorStunna Fishing Spear(both sold by The Business) are also good to have but we have found that spears from Cetus can also work decently in a pinch.

Related:Where to get Narmer Isoplasts in Warframe

Locations

To our knowledge, rare Servofish will only appear in or aroundhotspots. Hotspots are glowing patches of oddly-colored sludge, as pictured above.

Tromyzon Servofishwill appear mostly inpondswhile Orb Vallis iscoldwhileCharamote and Synathid Servofishwill both appear incaveswhile Orb Vallis iswarm. Orb Vallis is warm for just under seven minutes in a cycle while it’s cold for 20 minutes, making the former Servofish more reasonable to farm.

A pond on Orb Vallis is defined as any body of sludge that Servofish will spawn in that isnotthe large body of sludge in front of the Fortuna entrance and the large pool behind the Fortuna entrance. Those two specifically are lakes. If you are unsure if you’re at a pond or a lake, note thatSapcaddies spawn in lakesandTinks spawn in ponds.

Any body of sludge in a cave that can have a hotspot will have Charamote and Synathid Servofish potentially available so long as Orb Vallis is in its brief warm cycle.

Ever wondered what each enemy in Warframe is weak to but haven’t gotten round to checking? Go check outAll Enemies Weaknesses In Warframeto finally find out!