Mariscos KC

Mariscos KC is a locally-owned Mexican-seafood (mariscos) restaurant founded by Juan Valles Alferez, who established Mariscos KC LLC in March 2021 and opened the flagship dining room at 519 E Santa Fe Street in downtown Olathe, Kansas, in November 2021. The concept centers on coastal-Mexican seafood — shrimp ceviche, aguachiles, catfish tacos, molcajetes, and towering seafood platters — alongside craft cocktails, micheladas, and margaritas. A second Johnson County location opened in Shawnee (6505 Nieman Road) in November 2024. Note: this is a different operation from the similarly-named, unrelated Mariscos Mr. Culichi food-truck-turned-restaurant on Southwest Boulevard in Kansas City, MO.

| Corporate parent | None — independent, locally owned (Mariscos KC LLC) || | Notable features | Coastal/Sinaloa-style Mexican seafood; locally owned by a Mexican-American family operator; two Johnson County locations; menu of seafood towers, aguachiles, and boils ||

Description

Mariscos KC is a Mexican coastal-seafood restaurant — mariscos being the Spanish word for seafood/shellfish — operating in Johnson County, Kansas. The kitchen specializes in Mexican-inspired seafood: shrimp ceviche, aguachiles, catfish tacos, scallop and seafood towers, molcajetes, and seafood boils, rounded out with a bar program of craft cocktails, margaritas, micheladas, tequila spritzes, and daiquiris.¹ Local food coverage and listings describe it as a “go-to spot” for Mexican seafood in the Olathe/Shawnee corridor, with dine-in, takeout, and third-party delivery available.²³

The original Olathe dining room sits at 519 E Santa Fe Street in downtown Olathe; the second location opened in Shawnee, just off 65th Street and Nieman Road near CVS and the Johnson County Mental Health Center.¹

Ownership and history

Mariscos KC is independently and locally owned. State and Better Business Bureau records list Juan Valles Alferez as owner and registered agent of Mariscos KC LLC, with the business started March 30, 2021.⁴ The “valles_juan08” contact email associated with the restaurant’s Facebook page corroborates the Valles ownership.⁵

The flagship restaurant opened at 519 E Santa Fe Street in downtown Olathe in November 2021.¹⁴ In early November 2024, Mariscos KC opened its second Johnson County location at 6505 Nieman Road in Shawnee, in a space just off 65th Street and Nieman Road; the Johnson County Post reported the opening, describing the restaurant as “locally-owned” and noting its origins in Olathe.¹

Menu

Last verified: 2026-08-28 · Source: Mariscos KC official site menu (marisocskc.com) · URL(s): https://marisocskc.com/ · Confidence: High (item names, operator descriptions, and prices transcribed from the restaurant’s own HTML menu). Grubhub / Uber Eats / aggregator dollars previously on this page have been discarded.⁶⁷

The kitchen is coastal/Sinaloa-style Mexican mariscos: raw and chilled preparations (ceviches, aguachiles, cocteles), garlic- and chile-driven shrimp, molcajetes, seafood towers, Cajun-style boils, and a bar of micheladas, margaritas, and palomas.¹⁶ Ceviches, tostadas, and aguachiles are offered with a choice of sauce. Several items print Mkt Price (callo de acha, aguachile de callo, scallop tower, langostinos, king/dungeness crab add-ons) — those dollars are not invented here.

Happy hour Tue–Fri 2–5 p.m. ($3 off cocktails and starters; excludes oysters, guacamole, and queso). $1 oysters Tuesdays 5–9 p.m. with an alcoholic drink (excludes beer). $10 lunch menu Tue–Fri 11 a.m.–2 p.m.⁶

Starters

• Queso Dip — $5; add shrimp +$3⁶
• Guacamole — $5⁶
• Yellowfin Tuna — $11⁶
• Oyster Shots — 4 oysters with clamato mix; add tequila +$5 — $15⁶
• Tosti / Dori Locos — choice of chips, ceviche, pork rind, peanuts, chamoy, Valentina — $12⁶
• Flamin’ Tostitos — spicy Tostitos, aguachiles, sauce of choice — $15⁶
• Marlin Quesadillas — order of 3, mixed peppers and cheese — $15⁶
• Calamari Strips / Breaded Shrimp — $12⁶
• Ceviche App — fish ceviche $14; shrimp ceviche +$3⁶
• Shrimp & Octopus — lime, salt, pepper, and black sauce — $11⁶
• Oysters [Raw] — half dozen $15 / dozen $28⁶
• Prepared Oysters — 4 with ceviche or aguachile — $16⁶
• Shrimp Empanadas — order of 3, side of salad — $12⁶
• Chilindrina — ceviche, pork rinds, mayo, cabbage, Valentina, and chamoy — $13⁶
• Pata de Mula — 6 blood clams with sauce of choice — $15⁶
• Almeja Reyna — 3 queen clams in tomato lime juice — $15⁶
• Baby Octopus — garlic sauce — $13⁶
• Seafood Sampler (share) — shrimp, octopus, yellowfin tuna, blood clams, head-on shrimp, oysters — $70⁶

Ceviches

• Fish — $18⁶
• Shrimp — fully cooked or cured; Campechano +$5 — $21⁶
• Mixed — fish and shrimp — $20⁶
• Tropical — fish, habanero sauce, mango chunks; pineapple +$6 — $19⁶
• Campechano — fish, shrimp, surimi, octopus, scallop — $23⁶

Tostadas

• Cueritos — pork rind, white slaw — $6⁶
• Ceviche — $6; Campechano +$3⁶
• Ceviche Mixed — fish and shrimp — $8⁶
• Ceviche Tropical — fish, mango chunks, mango habanero sauce — $8⁶
• Aguachile — $8; Campechano +$3⁶
• Shrimp Ceviche — $8⁶
• Octopus — $9; Octopus & Shrimp — $11⁶
• Marlin — $9⁶
• Callo de Acha — market price⁶

Seafood cocktails

• Shrimp Cocktail — $16⁶
• Shrimp & Octopus — $19⁶
• Campechano — clamato base; shrimp, octopus, scallop, oyster, ceviche, surimi — $23⁶
• Frio — shrimp broth; shrimp, octopus, scallop, oyster, ceviche, surimi — $23⁶
• Scallop (Callo) — $18⁶
• Oyster — $18 / $30⁶
• Octopus — $22⁶

Aguachiles

• Aguachiles — shrimp cured in lime — $21⁶
• Campechano — shrimp, octopus, surimi, scallop — $25⁶
• Molcajete Frio (signature) — shrimp, octopus, surimi, scallop; side of jumbo fried shrimp — $29⁶
• Clamato Aguachiles — aguachiles in mild clamato sauce — $21⁶
• ½ Agua ½ Coctel — sauce choice and shrimp cocktail — $25⁶
• Aguachile de Callo — scallops cured in lime — market price⁶
• Aguachiles w/ Oyster Shots — aguachiles of choice with 4 oyster shots — $32⁶

Torres (seafood towers)

• Seafood Tower — aguachile, ceviche, surimi, octopus, scallops, shrimp; side of shrimp +$5 / oyster +$9 — $26⁶
• Clam Tower — queen clam or blood clam — $42⁶
• Scallop Tower — ceviche, aguachile, octopus, surimi, scallops — market price⁶

Tacos (order of 3)

• Baja Tacos — shrimp / fish / calamari — $15⁶
• Marlin / Catfish — white slaw, carrot, seasoned mayo — $15⁶
• Octopus / Asada / Barbacoa / Chicken / Carnitas — corn tortilla, white slaw, pico, guacamole — $15⁶

Camarones, molcajetes, and plates

• Cucaracha Shrimp — head-on/off shrimp in red house sauce — $24⁶
• Camarones al Ajo — head-on/off shrimp in garlic butter — $24⁶
• Blackened Shrimp — shrimp in black sauce with rice — $23⁶
• San Pedro Shrimp Tray — shrimp, peppers, corn, sausage, garlic bread; seafood mix +$5 — $25⁶
• Molcajete de Pulpo — octopus tentacles, shrimp, onion, spicy garlic sauce — $40⁶
• Molcajete Caliente (signature) — fish, octopus, shrimp, surimi, scallop, crab, mussels, garlic sauce — $35⁶
• Mojarra Frita — house/garlic sauce; shrimp +$5; fries and rice — $21⁶
• Fish Filet w/ Shrimp — spicy garlic sauce with rice — $18⁶
• Langostinos — jumbo prawns in spicy garlic sauce with cilantro lime rice — market price⁶
• Mussels — house sauce or garlic butter — $19⁶

Cajun boils (corn, potato, and egg)

• Crawfish Boil / Mussel Boil — $18⁶
• Shrimp Boil — head on/off — $23⁶
• Crab Boil — 2 crab clusters — $30⁶
• Seafood Boil — crab, mussels, shrimp, crawfish — $35⁶

Soups

• Shrimp Soup / Fish Soup — $16; Fish & Shrimp — $18⁶
• Mexican Ramen — shrimp, sausage, egg, cilantro, jalapeño — $16⁶
• Seafood Ramen — shrimp, octopus, surimi, mussels, crab, sausage, egg, cilantro, jalapeño — $24⁶
• 7 Mares (signature) — shrimp, fish, scallop, snow crab, octopus, mussels, surimi — $28⁶

$10 lunch (Tue–Fri 11 a.m.–2 p.m.)

Shrimp tacos, fish tacos, shrimp ceviche, shrimp aguachile (red or green), shrimp quesadilla, or shrimp soup — $10.⁶

Bar (signatures)

• Michelada — 32 oz classic $9; tamarind/mango +$3; Miche Preparada (beef jerky and shrimp) $18⁶
• Margarita — mango / watermelon / strawberry / black / tamarind / hibiscus $9; jumbo 32 oz +$5⁶
• Paloma $9 · Cantarito $9 · Spiked Mangoneada $12 · Fish Bowl (44 oz) $16⁶

Wine/beer/shooter lists on the same page are name+price only and are not itemized here.

Links

• Website: https://marisocskc.com/ — official first-party site; lists both the Olathe (519 E Santa Fe St) and Shawnee (6505 Nieman Rd) locations with matching phone numbers, menu, and hours (verified 2026-07-17).
• Instagram: https://www.instagram.com/mariscoskc/
• Phone: (913) 712-8156 (Olathe); (913) 318-0060 (Shawnee).⁴⁸

See also

• overland-park-ks
• Registry

Sources

Footnotes

1. Johnson County Post — “Seafood eatery Mariscos KC opens new Shawnee location” (2024-11-20) — Olathe origin (519 E Santa Fe St, opened Nov 2021), second location at 6505 Nieman Rd, Shawnee (opened early Nov 2024), “locally-owned,” Mexican-inspired seafood (shrimp ceviche, catfish tacos, scallop towers), craft-cocktail program. ↩ ↩² ↩³ ↩⁴ ↩⁵

2. Yelp — Mariscos KC, 519 E Santa Fe St, Olathe, KS (Seafood) — Olathe location, active listing, seafood/Mexican classification. ↩

3. Grubhub — Mariscos KC delivery menu, 519 E Santa Fe St, Olathe — online ordering / delivery availability, menu. ↩

4. Better Business Bureau — Mariscos KC LLC business profile, Olathe KS — legal name Mariscos KC LLC; owner/registered agent Juan Valles Alferez; business started March 30, 2021; address 519 E Santa Fe St, Olathe, KS 66061; phone (913) 712-8156. ↩ ↩² ↩³

5. Mariscos KC official Facebook page — Olathe KS location; contact email “valles_juan08@hotmail.com” corroborating Valles ownership. ↩

6. Mariscos KC official site menu (accessed 2026-08-28). First-party HTML menu for both Johnson County locations: starters, ceviches, tostadas, seafood cocktails, aguachiles, towers, tacos, camarones/molcajetes, Cajun boils, soups, $10 lunch (Tue–Fri 11 a.m.–2 p.m.), happy-hour notes, and bar. Market-price items (callo de acha, aguachile de callo, scallop tower, langostinos, king/dungeness crab) left unpriced. ↩ ↩² ↩³ ↩⁴ ↩⁵ ↩⁶ ↩⁷ ↩⁸ ↩⁹ ↩¹⁰ ↩¹¹ ↩¹² ↩¹³ ↩¹⁴ ↩¹⁵ ↩¹⁶ ↩¹⁷ ↩¹⁸ ↩¹⁹ ↩²⁰ ↩²¹ ↩²² ↩²³ ↩²⁴ ↩²⁵ ↩²⁶ ↩²⁷ ↩²⁸ ↩²⁹ ↩³⁰ ↩³¹ ↩³² ↩³³ ↩³⁴ ↩³⁵ ↩³⁶ ↩³⁷ ↩³⁸ ↩³⁹ ↩⁴⁰ ↩⁴¹ ↩⁴² ↩⁴³ ↩⁴⁴ ↩⁴⁵ ↩⁴⁶ ↩⁴⁷ ↩⁴⁸ ↩⁴⁹ ↩⁵⁰ ↩⁵¹ ↩⁵² ↩⁵³ ↩⁵⁴ ↩⁵⁵ ↩⁵⁶ ↩⁵⁷ ↩⁵⁸ ↩⁵⁹ ↩⁶⁰ ↩⁶¹ ↩⁶² ↩⁶³ ↩⁶⁴ ↩⁶⁵ ↩⁶⁶ ↩⁶⁷ ↩⁶⁸ ↩⁶⁹ ↩⁷⁰ ↩⁷¹ ↩⁷² ↩⁷³ ↩⁷⁴ ↩⁷⁵ ↩⁷⁶ ↩⁷⁷

7. Grubhub / Uber Eats / Wheree / eniplaces listings previously used for this page’s 2026-06-20 menu (e.g). Discarded as a price source 2026-08-28 once the official site published itemized first-party prices. Kept only as the record of what was replaced. ↩

8. Yelp — Mariscos KC, 6505 Nieman Rd, Shawnee, KS (Mexican) — Shawnee location, phone (913) 318-0060, active listing. ↩